Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT) - #126680

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Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)#126680
jkotas merged 3 commits into
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runtime-async=on was only set for Release builds of CoreCLR's System.Private.CoreLib, and was gated behind a riscv64/loongarch64 exclusion in NativeAOT's System.Private.CoreLib. This enables it unconditionally in both projects.

Changes

  • src/coreclr/System.Private.CoreLib/System.Private.CoreLib.csproj: Moved <Features>$(Features);runtime-async=on</Features> into the configuration-independent properties block, next to <Nullable>enable</Nullable>, so Debug, Checked, and Release builds all compile with the runtime-async feature.
  • src/coreclr/nativeaot/System.Private.CoreLib/src/System.Private.CoreLib.csproj: Removed the riscv64/loongarch64 architecture exclusion condition and the associated stale issue-reference comments. runtime-async=on is now enabled unconditionally, consistent with the CoreCLR change (riscv64 and loongarch64 support were resolved in Improve runtime-async support on linux-riscv64 #125446 and [LoongArch64] Enable Runtime Async. (issue#124935) #125114).

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Pull request overview

Enables runtime-async=on for System.Private.CoreLib in all build configurations (Debug/Checked/Release) by making the feature flag unconditional.

Changes:

  • Moves <Features>$(Features);runtime-async=on</Features> out of the Release-only PropertyGroup into an unconditional PropertyGroup.
  • Keeps Release-specific settings limited to <Optimize>.

jkotas
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CopilotAI requested a review from jkotasApril 9, 2026 01:35
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594

@MichalStrehovsky
Remove riscv64/loongarch64 exclusions from NativeAOT CoreLib runtime-…
3db9263
…async feature
Agent-Logs-Url: https://github.com/dotnet/runtime/sessions/172afd3b-48af-4fc5-a77d-9be94dec0db4
Co-authored-by: MichalStrehovsky <13110571+MichalStrehovsky@users.noreply.github.com>
CopilotAI review requested due to automatic review settings April 9, 2026 02:20
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594

Done in 3db9263 — removed the riscv64/loongarch64 exclusion condition and stale issue-reference comments from the NativeAOT System.Private.CoreLib.csproj (those issues were resolved in #125446 and #125114). runtime-async=on is now enabled unconditionally in both CoreCLR and NativeAOT CoreLib.

CopilotAI changed the title Enable runtime-async in Debug/Checked builds for System.Private.CoreLibEnable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)Apr 9, 2026
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Comment threadsrc/coreclr/nativeaot/System.Private.CoreLib/src/System.Private.CoreLib.csproj
CopilotAI requested a review from jkotasApril 10, 2026 03:00
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jkotas merged commit ddba785 into mainApr 10, 2026
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wtgodbe added a commit to dotnet/aspnetcore that referenced this pull request Apr 15, 2026
@wtgodbe
Quarantine IIS NewShim StartupTests failing due to runtime-async
246a359
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
wtgodbe added a commit to dotnet/aspnetcore that referenced this pull request Apr 15, 2026
@dotnet-maestro@akoeplinger
@ericstj@wtgodbe
[main] Source code updates from dotnet/dotnet (#66239)
1517391
* Backflow from https://github.com/dotnet/dotnet / 0cf6b19 build 309569
[[ commit created by automation ]]
* Update dependencies from build 309569
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26203.108 -> 11.0.0-preview.4.26208.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26203.108 -> 11.0.0-beta.26208.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26203.108 -> 3.3.0-preview.4.26208.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20408 -> 7.6.0-rc.20910)
[[ commit created by automation ]]
* Add feed back into NuGet.config
* Backflow from https://github.com/dotnet/dotnet / 5bed449 build 309901
[[ commit created by automation ]]
* Update dependencies from build 309901
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26208.110 -> 11.0.0-preview.4.26210.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26208.110 -> 11.0.0-beta.26210.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26208.110 -> 3.3.0-preview.4.26210.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20910 -> 7.6.0-rc.21110)
[[ commit created by automation ]]
* Add back package source for dotnet-extensions
* Remove DownloadFile task from RepoTasks
Removed the DownloadFile task from RepoTasks.
* Add quarantined test for AuthHeaderEnvironmentVariableRemoved
* Quarantine IIS NewShim StartupTests failing due to runtime-async
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine IIS NewShim StartupTests only (not other IIS variants)
Only the NewShim variants of StartupTests are failing after
runtime-async was enabled in CoreCLR. Use a partial class to
apply [QuarantinedTest] only to the NewShim assembly, leaving
the IIS, IISExpress, and NewHandler variants unaffected.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Use #if NEWSHIM_FUNCTIONALS instead of partial class for quarantine
Simpler approach: conditionally apply [QuarantinedTest] using the
existing NEWSHIM_FUNCTIONALS define constant instead of adding a
partial class and a new file. No new files needed.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine ShutdownTests.OutOfProcessToInProcessHostingModelSwitchWorks for NewShim
This test hangs in the NewShim variant, blocking the entire work
item. Same runtime-async root cause as the StartupTests failures.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine entire ShutdownTests class for NewShim
Multiple ShutdownTests methods are failing/hanging in the NewShim
variant. Move to class-level quarantine instead of individual
method quarantine.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---------
Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Alexander Köplinger <alex.koeplinger@outlook.com>
Co-authored-by: Eric StJohn <ericstj@microsoft.com>
Co-authored-by: wigodbe <wigodbe@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT) - #126680
Merged
jkotas merged 3 commits into
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copilot/enable-runtime-async-debug-builds
Apr 10, 2026
Merged
Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)#126680
jkotas merged 3 commits into
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runtime-async=on was only set for Release builds of CoreCLR's System.Private.CoreLib, and was gated behind a riscv64/loongarch64 exclusion in NativeAOT's System.Private.CoreLib. This enables it unconditionally in both projects.
Changes
  • src/coreclr/System.Private.CoreLib/System.Private.CoreLib.csproj: Moved <Features>$(Features);runtime-async=on</Features> into the configuration-independent properties block, next to <Nullable>enable</Nullable>, so Debug, Checked, and Release builds all compile with the runtime-async feature.
  • src/coreclr/nativeaot/System.Private.CoreLib/src/System.Private.CoreLib.csproj: Removed the riscv64/loongarch64 architecture exclusion condition and the associated stale issue-reference comments. runtime-async=on is now enabled unconditionally, consistent with the CoreCLR change (riscv64 and loongarch64 support were resolved in Improve runtime-async support on linux-riscv64 #125446 and [LoongArch64] Enable Runtime Async. (issue#124935) #125114).
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Pull request overview
Enables runtime-async=on for System.Private.CoreLib in all build configurations (Debug/Checked/Release) by making the feature flag unconditional.
Changes:
  • Moves <Features>$(Features);runtime-async=on</Features> out of the Release-only PropertyGroup into an unconditional PropertyGroup.
  • Keeps Release-specific settings limited to <Optimize>.
jkotas
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Comment threadsrc/coreclr/System.Private.CoreLib/System.Private.CoreLib.csproj
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594
@MichalStrehovsky
Remove riscv64/loongarch64 exclusions from NativeAOT CoreLib runtime-…
3db9263
…async feature
Agent-Logs-Url: https://github.com/dotnet/runtime/sessions/172afd3b-48af-4fc5-a77d-9be94dec0db4
Co-authored-by: MichalStrehovsky <13110571+MichalStrehovsky@users.noreply.github.com>
CopilotAI
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594
Done in 3db9263 — removed the riscv64/loongarch64 exclusion condition and stale issue-reference comments from the NativeAOT System.Private.CoreLib.csproj (those issues were resolved in #125446 and #125114). runtime-async=on is now enabled unconditionally in both CoreCLR and NativeAOT CoreLib.
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Enable runtime-async in Debug/Checked builds for System.Private.CoreLibEnable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)Apr 9, 2026

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Apr 15, 2026
@wtgodbe
Quarantine IIS NewShim StartupTests failing due to runtime-async
246a359
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
wtgodbe added a commit
to dotnet/aspnetcore
that referenced
this pull request
Apr 15, 2026
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@ericstj@wtgodbe
[main] Source code updates from dotnet/dotnet (#66239)
1517391
* Backflow from https://github.com/dotnet/dotnet / 0cf6b19 build 309569
[[ commit created by automation ]]
* Update dependencies from build 309569
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26203.108 -> 11.0.0-preview.4.26208.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26203.108 -> 11.0.0-beta.26208.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26203.108 -> 3.3.0-preview.4.26208.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20408 -> 7.6.0-rc.20910)
[[ commit created by automation ]]
* Add feed back into NuGet.config
* Backflow from https://github.com/dotnet/dotnet / 5bed449 build 309901
[[ commit created by automation ]]
* Update dependencies from build 309901
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26208.110 -> 11.0.0-preview.4.26210.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26208.110 -> 11.0.0-beta.26210.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26208.110 -> 3.3.0-preview.4.26210.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20910 -> 7.6.0-rc.21110)
[[ commit created by automation ]]
* Add back package source for dotnet-extensions
* Remove DownloadFile task from RepoTasks
Removed the DownloadFile task from RepoTasks.
* Add quarantined test for AuthHeaderEnvironmentVariableRemoved
* Quarantine IIS NewShim StartupTests failing due to runtime-async
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine IIS NewShim StartupTests only (not other IIS variants)
Only the NewShim variants of StartupTests are failing after
runtime-async was enabled in CoreCLR. Use a partial class to
apply [QuarantinedTest] only to the NewShim assembly, leaving
the IIS, IISExpress, and NewHandler variants unaffected.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Use #if NEWSHIM_FUNCTIONALS instead of partial class for quarantine
Simpler approach: conditionally apply [QuarantinedTest] using the
existing NEWSHIM_FUNCTIONALS define constant instead of adding a
partial class and a new file. No new files needed.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine ShutdownTests.OutOfProcessToInProcessHostingModelSwitchWorks for NewShim
This test hangs in the NewShim variant, blocking the entire work
item. Same runtime-async root cause as the StartupTests failures.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine entire ShutdownTests class for NewShim
Multiple ShutdownTests methods are failing/hanging in the NewShim
variant. Move to class-level quarantine instead of individual
method quarantine.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---------
Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Alexander Köplinger <alex.koeplinger@outlook.com>
Co-authored-by: Eric StJohn <ericstj@microsoft.com>
Co-authored-by: wigodbe <wigodbe@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT) - #126680
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jkotas merged 3 commits into
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copilot/enable-runtime-async-debug-builds
Apr 10, 2026
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Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)#126680
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runtime-async=on was only set for Release builds of CoreCLR's System.Private.CoreLib, and was gated behind a riscv64/loongarch64 exclusion in NativeAOT's System.Private.CoreLib. This enables it unconditionally in both projects.
Changes
  • src/coreclr/System.Private.CoreLib/System.Private.CoreLib.csproj: Moved <Features>$(Features);runtime-async=on</Features> into the configuration-independent properties block, next to <Nullable>enable</Nullable>, so Debug, Checked, and Release builds all compile with the runtime-async feature.
  • src/coreclr/nativeaot/System.Private.CoreLib/src/System.Private.CoreLib.csproj: Removed the riscv64/loongarch64 architecture exclusion condition and the associated stale issue-reference comments. runtime-async=on is now enabled unconditionally, consistent with the CoreCLR change (riscv64 and loongarch64 support were resolved in Improve runtime-async support on linux-riscv64 #125446 and [LoongArch64] Enable Runtime Async. (issue#124935) #125114).
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Pull request overview
Enables runtime-async=on for System.Private.CoreLib in all build configurations (Debug/Checked/Release) by making the feature flag unconditional.
Changes:
  • Moves <Features>$(Features);runtime-async=on</Features> out of the Release-only PropertyGroup into an unconditional PropertyGroup.
  • Keeps Release-specific settings limited to <Optimize>.
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594
@MichalStrehovsky
Remove riscv64/loongarch64 exclusions from NativeAOT CoreLib runtime-…
3db9263
…async feature
Agent-Logs-Url: https://github.com/dotnet/runtime/sessions/172afd3b-48af-4fc5-a77d-9be94dec0db4
Co-authored-by: MichalStrehovsky <13110571+MichalStrehovsky@users.noreply.github.com>
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594
Done in 3db9263 — removed the riscv64/loongarch64 exclusion condition and stale issue-reference comments from the NativeAOT System.Private.CoreLib.csproj (those issues were resolved in #125446 and #125114). runtime-async=on is now enabled unconditionally in both CoreCLR and NativeAOT CoreLib.
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Enable runtime-async in Debug/Checked builds for System.Private.CoreLibEnable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)Apr 9, 2026

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wtgodbe added a commit
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Apr 15, 2026
@wtgodbe
Quarantine IIS NewShim StartupTests failing due to runtime-async
246a359
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
wtgodbe added a commit
to dotnet/aspnetcore
that referenced
this pull request
Apr 15, 2026
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@ericstj@wtgodbe
[main] Source code updates from dotnet/dotnet (#66239)
1517391
* Backflow from https://github.com/dotnet/dotnet / 0cf6b19 build 309569
[[ commit created by automation ]]
* Update dependencies from build 309569
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26203.108 -> 11.0.0-preview.4.26208.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26203.108 -> 11.0.0-beta.26208.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26203.108 -> 3.3.0-preview.4.26208.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20408 -> 7.6.0-rc.20910)
[[ commit created by automation ]]
* Add feed back into NuGet.config
* Backflow from https://github.com/dotnet/dotnet / 5bed449 build 309901
[[ commit created by automation ]]
* Update dependencies from build 309901
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26208.110 -> 11.0.0-preview.4.26210.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26208.110 -> 11.0.0-beta.26210.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26208.110 -> 3.3.0-preview.4.26210.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20910 -> 7.6.0-rc.21110)
[[ commit created by automation ]]
* Add back package source for dotnet-extensions
* Remove DownloadFile task from RepoTasks
Removed the DownloadFile task from RepoTasks.
* Add quarantined test for AuthHeaderEnvironmentVariableRemoved
* Quarantine IIS NewShim StartupTests failing due to runtime-async
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine IIS NewShim StartupTests only (not other IIS variants)
Only the NewShim variants of StartupTests are failing after
runtime-async was enabled in CoreCLR. Use a partial class to
apply [QuarantinedTest] only to the NewShim assembly, leaving
the IIS, IISExpress, and NewHandler variants unaffected.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Use #if NEWSHIM_FUNCTIONALS instead of partial class for quarantine
Simpler approach: conditionally apply [QuarantinedTest] using the
existing NEWSHIM_FUNCTIONALS define constant instead of adding a
partial class and a new file. No new files needed.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine ShutdownTests.OutOfProcessToInProcessHostingModelSwitchWorks for NewShim
This test hangs in the NewShim variant, blocking the entire work
item. Same runtime-async root cause as the StartupTests failures.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine entire ShutdownTests class for NewShim
Multiple ShutdownTests methods are failing/hanging in the NewShim
variant. Move to class-level quarantine instead of individual
method quarantine.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---------
Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Alexander Köplinger <alex.koeplinger@outlook.com>
Co-authored-by: Eric StJohn <ericstj@microsoft.com>
Co-authored-by: wigodbe <wigodbe@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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@jkotasjkotasjkotas approved these changes
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Skip to content
Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT) - #126680
Merged
jkotas merged 3 commits into
mainfrom 
copilot/enable-runtime-async-debug-builds
Apr 10, 2026
Merged
Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)#126680
jkotas merged 3 commits into
mainfrom 
copilot/enable-runtime-async-debug-builds
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runtime-async=on was only set for Release builds of CoreCLR's System.Private.CoreLib, and was gated behind a riscv64/loongarch64 exclusion in NativeAOT's System.Private.CoreLib. This enables it unconditionally in both projects.
Changes
  • src/coreclr/System.Private.CoreLib/System.Private.CoreLib.csproj: Moved <Features>$(Features);runtime-async=on</Features> into the configuration-independent properties block, next to <Nullable>enable</Nullable>, so Debug, Checked, and Release builds all compile with the runtime-async feature.
  • src/coreclr/nativeaot/System.Private.CoreLib/src/System.Private.CoreLib.csproj: Removed the riscv64/loongarch64 architecture exclusion condition and the associated stale issue-reference comments. runtime-async=on is now enabled unconditionally, consistent with the CoreCLR change (riscv64 and loongarch64 support were resolved in Improve runtime-async support on linux-riscv64 #125446 and [LoongArch64] Enable Runtime Async. (issue#124935) #125114).
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Pull request overview
Enables runtime-async=on for System.Private.CoreLib in all build configurations (Debug/Checked/Release) by making the feature flag unconditional.
Changes:
  • Moves <Features>$(Features);runtime-async=on</Features> out of the Release-only PropertyGroup into an unconditional PropertyGroup.
  • Keeps Release-specific settings limited to <Optimize>.
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594
@MichalStrehovsky
Remove riscv64/loongarch64 exclusions from NativeAOT CoreLib runtime-…
3db9263
…async feature
Agent-Logs-Url: https://github.com/dotnet/runtime/sessions/172afd3b-48af-4fc5-a77d-9be94dec0db4
Co-authored-by: MichalStrehovsky <13110571+MichalStrehovsky@users.noreply.github.com>
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594
Done in 3db9263 — removed the riscv64/loongarch64 exclusion condition and stale issue-reference comments from the NativeAOT System.Private.CoreLib.csproj (those issues were resolved in #125446 and #125114). runtime-async=on is now enabled unconditionally in both CoreCLR and NativeAOT CoreLib.
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Enable runtime-async in Debug/Checked builds for System.Private.CoreLibEnable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)Apr 9, 2026

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@wtgodbe
Quarantine IIS NewShim StartupTests failing due to runtime-async
246a359
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
wtgodbe added a commit
to dotnet/aspnetcore
that referenced
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Apr 15, 2026
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[main] Source code updates from dotnet/dotnet (#66239)
1517391
* Backflow from https://github.com/dotnet/dotnet / 0cf6b19 build 309569
[[ commit created by automation ]]
* Update dependencies from build 309569
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26203.108 -> 11.0.0-preview.4.26208.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26203.108 -> 11.0.0-beta.26208.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26203.108 -> 3.3.0-preview.4.26208.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20408 -> 7.6.0-rc.20910)
[[ commit created by automation ]]
* Add feed back into NuGet.config
* Backflow from https://github.com/dotnet/dotnet / 5bed449 build 309901
[[ commit created by automation ]]
* Update dependencies from build 309901
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26208.110 -> 11.0.0-preview.4.26210.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26208.110 -> 11.0.0-beta.26210.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26208.110 -> 3.3.0-preview.4.26210.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20910 -> 7.6.0-rc.21110)
[[ commit created by automation ]]
* Add back package source for dotnet-extensions
* Remove DownloadFile task from RepoTasks
Removed the DownloadFile task from RepoTasks.
* Add quarantined test for AuthHeaderEnvironmentVariableRemoved
* Quarantine IIS NewShim StartupTests failing due to runtime-async
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine IIS NewShim StartupTests only (not other IIS variants)
Only the NewShim variants of StartupTests are failing after
runtime-async was enabled in CoreCLR. Use a partial class to
apply [QuarantinedTest] only to the NewShim assembly, leaving
the IIS, IISExpress, and NewHandler variants unaffected.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Use #if NEWSHIM_FUNCTIONALS instead of partial class for quarantine
Simpler approach: conditionally apply [QuarantinedTest] using the
existing NEWSHIM_FUNCTIONALS define constant instead of adding a
partial class and a new file. No new files needed.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine ShutdownTests.OutOfProcessToInProcessHostingModelSwitchWorks for NewShim
This test hangs in the NewShim variant, blocking the entire work
item. Same runtime-async root cause as the StartupTests failures.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine entire ShutdownTests class for NewShim
Multiple ShutdownTests methods are failing/hanging in the NewShim
variant. Move to class-level quarantine instead of individual
method quarantine.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---------
Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Alexander Köplinger <alex.koeplinger@outlook.com>
Co-authored-by: Eric StJohn <ericstj@microsoft.com>
Co-authored-by: wigodbe <wigodbe@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT) - #126680
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Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)#126680
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runtime-async=on was only set for Release builds of CoreCLR's System.Private.CoreLib, and was gated behind a riscv64/loongarch64 exclusion in NativeAOT's System.Private.CoreLib. This enables it unconditionally in both projects.
Changes
  • src/coreclr/System.Private.CoreLib/System.Private.CoreLib.csproj: Moved <Features>$(Features);runtime-async=on</Features> into the configuration-independent properties block, next to <Nullable>enable</Nullable>, so Debug, Checked, and Release builds all compile with the runtime-async feature.
  • src/coreclr/nativeaot/System.Private.CoreLib/src/System.Private.CoreLib.csproj: Removed the riscv64/loongarch64 architecture exclusion condition and the associated stale issue-reference comments. runtime-async=on is now enabled unconditionally, consistent with the CoreCLR change (riscv64 and loongarch64 support were resolved in Improve runtime-async support on linux-riscv64 #125446 and [LoongArch64] Enable Runtime Async. (issue#124935) #125114).
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Pull request overview
Enables runtime-async=on for System.Private.CoreLib in all build configurations (Debug/Checked/Release) by making the feature flag unconditional.
Changes:
  • Moves <Features>$(Features);runtime-async=on</Features> out of the Release-only PropertyGroup into an unconditional PropertyGroup.
  • Keeps Release-specific settings limited to <Optimize>.
jkotas
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594
@MichalStrehovsky
Remove riscv64/loongarch64 exclusions from NativeAOT CoreLib runtime-…
3db9263
…async feature
Agent-Logs-Url: https://github.com/dotnet/runtime/sessions/172afd3b-48af-4fc5-a77d-9be94dec0db4
Co-authored-by: MichalStrehovsky <13110571+MichalStrehovsky@users.noreply.github.com>
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594
Done in 3db9263 — removed the riscv64/loongarch64 exclusion condition and stale issue-reference comments from the NativeAOT System.Private.CoreLib.csproj (those issues were resolved in #125446 and #125114). runtime-async=on is now enabled unconditionally in both CoreCLR and NativeAOT CoreLib.
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Enable runtime-async in Debug/Checked builds for System.Private.CoreLibEnable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)Apr 9, 2026

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wtgodbe added a commit
to dotnet/aspnetcore
that referenced
this pull request
Apr 15, 2026
@wtgodbe
Quarantine IIS NewShim StartupTests failing due to runtime-async
246a359
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
wtgodbe added a commit
to dotnet/aspnetcore
that referenced
this pull request
Apr 15, 2026
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@ericstj@wtgodbe
[main] Source code updates from dotnet/dotnet (#66239)
1517391
* Backflow from https://github.com/dotnet/dotnet / 0cf6b19 build 309569
[[ commit created by automation ]]
* Update dependencies from build 309569
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26203.108 -> 11.0.0-preview.4.26208.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26203.108 -> 11.0.0-beta.26208.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26203.108 -> 3.3.0-preview.4.26208.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20408 -> 7.6.0-rc.20910)
[[ commit created by automation ]]
* Add feed back into NuGet.config
* Backflow from https://github.com/dotnet/dotnet / 5bed449 build 309901
[[ commit created by automation ]]
* Update dependencies from build 309901
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26208.110 -> 11.0.0-preview.4.26210.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26208.110 -> 11.0.0-beta.26210.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26208.110 -> 3.3.0-preview.4.26210.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20910 -> 7.6.0-rc.21110)
[[ commit created by automation ]]
* Add back package source for dotnet-extensions
* Remove DownloadFile task from RepoTasks
Removed the DownloadFile task from RepoTasks.
* Add quarantined test for AuthHeaderEnvironmentVariableRemoved
* Quarantine IIS NewShim StartupTests failing due to runtime-async
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine IIS NewShim StartupTests only (not other IIS variants)
Only the NewShim variants of StartupTests are failing after
runtime-async was enabled in CoreCLR. Use a partial class to
apply [QuarantinedTest] only to the NewShim assembly, leaving
the IIS, IISExpress, and NewHandler variants unaffected.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Use #if NEWSHIM_FUNCTIONALS instead of partial class for quarantine
Simpler approach: conditionally apply [QuarantinedTest] using the
existing NEWSHIM_FUNCTIONALS define constant instead of adding a
partial class and a new file. No new files needed.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine ShutdownTests.OutOfProcessToInProcessHostingModelSwitchWorks for NewShim
This test hangs in the NewShim variant, blocking the entire work
item. Same runtime-async root cause as the StartupTests failures.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine entire ShutdownTests class for NewShim
Multiple ShutdownTests methods are failing/hanging in the NewShim
variant. Move to class-level quarantine instead of individual
method quarantine.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---------
Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Alexander Köplinger <alex.koeplinger@outlook.com>
Co-authored-by: Eric StJohn <ericstj@microsoft.com>
Co-authored-by: wigodbe <wigodbe@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT) - #126680
Merged
jkotas merged 3 commits into
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copilot/enable-runtime-async-debug-builds
Apr 10, 2026
Merged
Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)#126680
jkotas merged 3 commits into
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copilot/enable-runtime-async-debug-builds
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runtime-async=on was only set for Release builds of CoreCLR's System.Private.CoreLib, and was gated behind a riscv64/loongarch64 exclusion in NativeAOT's System.Private.CoreLib. This enables it unconditionally in both projects.
Changes
  • src/coreclr/System.Private.CoreLib/System.Private.CoreLib.csproj: Moved <Features>$(Features);runtime-async=on</Features> into the configuration-independent properties block, next to <Nullable>enable</Nullable>, so Debug, Checked, and Release builds all compile with the runtime-async feature.
  • src/coreclr/nativeaot/System.Private.CoreLib/src/System.Private.CoreLib.csproj: Removed the riscv64/loongarch64 architecture exclusion condition and the associated stale issue-reference comments. runtime-async=on is now enabled unconditionally, consistent with the CoreCLR change (riscv64 and loongarch64 support were resolved in Improve runtime-async support on linux-riscv64 #125446 and [LoongArch64] Enable Runtime Async. (issue#124935) #125114).
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Pull request overview
Enables runtime-async=on for System.Private.CoreLib in all build configurations (Debug/Checked/Release) by making the feature flag unconditional.
Changes:
  • Moves <Features>$(Features);runtime-async=on</Features> out of the Release-only PropertyGroup into an unconditional PropertyGroup.
  • Keeps Release-specific settings limited to <Optimize>.
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594
@MichalStrehovsky
Remove riscv64/loongarch64 exclusions from NativeAOT CoreLib runtime-…
3db9263
…async feature
Agent-Logs-Url: https://github.com/dotnet/runtime/sessions/172afd3b-48af-4fc5-a77d-9be94dec0db4
Co-authored-by: MichalStrehovsky <13110571+MichalStrehovsky@users.noreply.github.com>
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594
Done in 3db9263 — removed the riscv64/loongarch64 exclusion condition and stale issue-reference comments from the NativeAOT System.Private.CoreLib.csproj (those issues were resolved in #125446 and #125114). runtime-async=on is now enabled unconditionally in both CoreCLR and NativeAOT CoreLib.
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Enable runtime-async in Debug/Checked builds for System.Private.CoreLibEnable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)Apr 9, 2026

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wtgodbe added a commit
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that referenced
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Apr 15, 2026
@wtgodbe
Quarantine IIS NewShim StartupTests failing due to runtime-async
246a359
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
wtgodbe added a commit
to dotnet/aspnetcore
that referenced
this pull request
Apr 15, 2026
@dotnet-maestro@akoeplinger
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[main] Source code updates from dotnet/dotnet (#66239)
1517391
* Backflow from https://github.com/dotnet/dotnet / 0cf6b19 build 309569
[[ commit created by automation ]]
* Update dependencies from build 309569
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26203.108 -> 11.0.0-preview.4.26208.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26203.108 -> 11.0.0-beta.26208.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26203.108 -> 3.3.0-preview.4.26208.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20408 -> 7.6.0-rc.20910)
[[ commit created by automation ]]
* Add feed back into NuGet.config
* Backflow from https://github.com/dotnet/dotnet / 5bed449 build 309901
[[ commit created by automation ]]
* Update dependencies from build 309901
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26208.110 -> 11.0.0-preview.4.26210.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26208.110 -> 11.0.0-beta.26210.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26208.110 -> 3.3.0-preview.4.26210.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20910 -> 7.6.0-rc.21110)
[[ commit created by automation ]]
* Add back package source for dotnet-extensions
* Remove DownloadFile task from RepoTasks
Removed the DownloadFile task from RepoTasks.
* Add quarantined test for AuthHeaderEnvironmentVariableRemoved
* Quarantine IIS NewShim StartupTests failing due to runtime-async
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine IIS NewShim StartupTests only (not other IIS variants)
Only the NewShim variants of StartupTests are failing after
runtime-async was enabled in CoreCLR. Use a partial class to
apply [QuarantinedTest] only to the NewShim assembly, leaving
the IIS, IISExpress, and NewHandler variants unaffected.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Use #if NEWSHIM_FUNCTIONALS instead of partial class for quarantine
Simpler approach: conditionally apply [QuarantinedTest] using the
existing NEWSHIM_FUNCTIONALS define constant instead of adding a
partial class and a new file. No new files needed.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine ShutdownTests.OutOfProcessToInProcessHostingModelSwitchWorks for NewShim
This test hangs in the NewShim variant, blocking the entire work
item. Same runtime-async root cause as the StartupTests failures.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine entire ShutdownTests class for NewShim
Multiple ShutdownTests methods are failing/hanging in the NewShim
variant. Move to class-level quarantine instead of individual
method quarantine.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---------
Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Alexander Köplinger <alex.koeplinger@outlook.com>
Co-authored-by: Eric StJohn <ericstj@microsoft.com>
Co-authored-by: wigodbe <wigodbe@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
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})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT) - #126680
Merged
jkotas merged 3 commits into
mainfrom 
copilot/enable-runtime-async-debug-builds
Apr 10, 2026
Merged
Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)#126680
jkotas merged 3 commits into
mainfrom 
copilot/enable-runtime-async-debug-builds
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runtime-async=on was only set for Release builds of CoreCLR's System.Private.CoreLib, and was gated behind a riscv64/loongarch64 exclusion in NativeAOT's System.Private.CoreLib. This enables it unconditionally in both projects.
Changes
  • src/coreclr/System.Private.CoreLib/System.Private.CoreLib.csproj: Moved <Features>$(Features);runtime-async=on</Features> into the configuration-independent properties block, next to <Nullable>enable</Nullable>, so Debug, Checked, and Release builds all compile with the runtime-async feature.
  • src/coreclr/nativeaot/System.Private.CoreLib/src/System.Private.CoreLib.csproj: Removed the riscv64/loongarch64 architecture exclusion condition and the associated stale issue-reference comments. runtime-async=on is now enabled unconditionally, consistent with the CoreCLR change (riscv64 and loongarch64 support were resolved in Improve runtime-async support on linux-riscv64 #125446 and [LoongArch64] Enable Runtime Async. (issue#124935) #125114).
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Pull request overview
Enables runtime-async=on for System.Private.CoreLib in all build configurations (Debug/Checked/Release) by making the feature flag unconditional.
Changes:
  • Moves <Features>$(Features);runtime-async=on</Features> out of the Release-only PropertyGroup into an unconditional PropertyGroup.
  • Keeps Release-specific settings limited to <Optimize>.
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594
@MichalStrehovsky
Remove riscv64/loongarch64 exclusions from NativeAOT CoreLib runtime-…
3db9263
…async feature
Agent-Logs-Url: https://github.com/dotnet/runtime/sessions/172afd3b-48af-4fc5-a77d-9be94dec0db4
Co-authored-by: MichalStrehovsky <13110571+MichalStrehovsky@users.noreply.github.com>
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594
Done in 3db9263 — removed the riscv64/loongarch64 exclusion condition and stale issue-reference comments from the NativeAOT System.Private.CoreLib.csproj (those issues were resolved in #125446 and #125114). runtime-async=on is now enabled unconditionally in both CoreCLR and NativeAOT CoreLib.
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Enable runtime-async in Debug/Checked builds for System.Private.CoreLibEnable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)Apr 9, 2026

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wtgodbe added a commit
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Apr 15, 2026
@wtgodbe
Quarantine IIS NewShim StartupTests failing due to runtime-async
246a359
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
wtgodbe added a commit
to dotnet/aspnetcore
that referenced
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[main] Source code updates from dotnet/dotnet (#66239)
1517391
* Backflow from https://github.com/dotnet/dotnet / 0cf6b19 build 309569
[[ commit created by automation ]]
* Update dependencies from build 309569
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26203.108 -> 11.0.0-preview.4.26208.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26203.108 -> 11.0.0-beta.26208.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26203.108 -> 3.3.0-preview.4.26208.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20408 -> 7.6.0-rc.20910)
[[ commit created by automation ]]
* Add feed back into NuGet.config
* Backflow from https://github.com/dotnet/dotnet / 5bed449 build 309901
[[ commit created by automation ]]
* Update dependencies from build 309901
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26208.110 -> 11.0.0-preview.4.26210.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26208.110 -> 11.0.0-beta.26210.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26208.110 -> 3.3.0-preview.4.26210.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20910 -> 7.6.0-rc.21110)
[[ commit created by automation ]]
* Add back package source for dotnet-extensions
* Remove DownloadFile task from RepoTasks
Removed the DownloadFile task from RepoTasks.
* Add quarantined test for AuthHeaderEnvironmentVariableRemoved
* Quarantine IIS NewShim StartupTests failing due to runtime-async
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine IIS NewShim StartupTests only (not other IIS variants)
Only the NewShim variants of StartupTests are failing after
runtime-async was enabled in CoreCLR. Use a partial class to
apply [QuarantinedTest] only to the NewShim assembly, leaving
the IIS, IISExpress, and NewHandler variants unaffected.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Use #if NEWSHIM_FUNCTIONALS instead of partial class for quarantine
Simpler approach: conditionally apply [QuarantinedTest] using the
existing NEWSHIM_FUNCTIONALS define constant instead of adding a
partial class and a new file. No new files needed.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine ShutdownTests.OutOfProcessToInProcessHostingModelSwitchWorks for NewShim
This test hangs in the NewShim variant, blocking the entire work
item. Same runtime-async root cause as the StartupTests failures.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine entire ShutdownTests class for NewShim
Multiple ShutdownTests methods are failing/hanging in the NewShim
variant. Move to class-level quarantine instead of individual
method quarantine.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---------
Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Alexander Köplinger <alex.koeplinger@outlook.com>
Co-authored-by: Eric StJohn <ericstj@microsoft.com>
Co-authored-by: wigodbe <wigodbe@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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::-webkit-scrollbar-thumb { background: #444 !important; }
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/* Selection */
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console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
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} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
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Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT) - #126680
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Enable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)#126680
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runtime-async=on was only set for Release builds of CoreCLR's System.Private.CoreLib, and was gated behind a riscv64/loongarch64 exclusion in NativeAOT's System.Private.CoreLib. This enables it unconditionally in both projects.
Changes
  • src/coreclr/System.Private.CoreLib/System.Private.CoreLib.csproj: Moved <Features>$(Features);runtime-async=on</Features> into the configuration-independent properties block, next to <Nullable>enable</Nullable>, so Debug, Checked, and Release builds all compile with the runtime-async feature.
  • src/coreclr/nativeaot/System.Private.CoreLib/src/System.Private.CoreLib.csproj: Removed the riscv64/loongarch64 architecture exclusion condition and the associated stale issue-reference comments. runtime-async=on is now enabled unconditionally, consistent with the CoreCLR change (riscv64 and loongarch64 support were resolved in Improve runtime-async support on linux-riscv64 #125446 and [LoongArch64] Enable Runtime Async. (issue#124935) #125114).
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Pull request overview
Enables runtime-async=on for System.Private.CoreLib in all build configurations (Debug/Checked/Release) by making the feature flag unconditional.
Changes:
  • Moves <Features>$(Features);runtime-async=on</Features> out of the Release-only PropertyGroup into an unconditional PropertyGroup.
  • Keeps Release-specific settings limited to <Optimize>.
jkotas
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594
@MichalStrehovsky
Remove riscv64/loongarch64 exclusions from NativeAOT CoreLib runtime-…
3db9263
…async feature
Agent-Logs-Url: https://github.com/dotnet/runtime/sessions/172afd3b-48af-4fc5-a77d-9be94dec0db4
Co-authored-by: MichalStrehovsky <13110571+MichalStrehovsky@users.noreply.github.com>
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This was not the only piece of unaddressed feedback. @copilot also address the native AOT CoreLib comments from #126594
Done in 3db9263 — removed the riscv64/loongarch64 exclusion condition and stale issue-reference comments from the NativeAOT System.Private.CoreLib.csproj (those issues were resolved in #125446 and #125114). runtime-async=on is now enabled unconditionally in both CoreCLR and NativeAOT CoreLib.
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Enable runtime-async in Debug/Checked builds for System.Private.CoreLibEnable runtime-async unconditionally in System.Private.CoreLib (CoreCLR and NativeAOT)Apr 9, 2026

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@wtgodbe
Quarantine IIS NewShim StartupTests failing due to runtime-async
246a359
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
wtgodbe added a commit
to dotnet/aspnetcore
that referenced
this pull request
Apr 15, 2026
@dotnet-maestro@akoeplinger
@ericstj@wtgodbe
[main] Source code updates from dotnet/dotnet (#66239)
1517391
* Backflow from https://github.com/dotnet/dotnet / 0cf6b19 build 309569
[[ commit created by automation ]]
* Update dependencies from build 309569
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26203.108 -> 11.0.0-preview.4.26208.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26203.108 -> 11.0.0-beta.26208.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26203.108 -> 3.3.0-preview.4.26208.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20408 -> 7.6.0-rc.20910)
[[ commit created by automation ]]
* Add feed back into NuGet.config
* Backflow from https://github.com/dotnet/dotnet / 5bed449 build 309901
[[ commit created by automation ]]
* Update dependencies from build 309901
Updated Dependencies:
Microsoft.NET.Runtime.WebAssembly.Sdk, Microsoft.NETCore.BrowserDebugHost.Transport, Microsoft.NET.Runtime.MonoAOTCompiler.Task, dotnet-ef, Microsoft.Bcl.AsyncInterfaces, Microsoft.Bcl.TimeProvider, Microsoft.EntityFrameworkCore, Microsoft.EntityFrameworkCore.Design, Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.Relational, Microsoft.EntityFrameworkCore.Sqlite, Microsoft.EntityFrameworkCore.SqlServer, Microsoft.EntityFrameworkCore.Tools, Microsoft.Extensions.Caching.Abstractions, Microsoft.Extensions.Caching.Memory, Microsoft.Extensions.Configuration, Microsoft.Extensions.Configuration.Abstractions, Microsoft.Extensions.Configuration.Binder, Microsoft.Extensions.Configuration.CommandLine, Microsoft.Extensions.Configuration.EnvironmentVariables, Microsoft.Extensions.Configuration.FileExtensions, Microsoft.Extensions.Configuration.Ini, Microsoft.Extensions.Configuration.Json, Microsoft.Extensions.Configuration.UserSecrets, Microsoft.Extensions.Configuration.Xml, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.DependencyInjection.Abstractions, Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Diagnostics, Microsoft.Extensions.Diagnostics.Abstractions, Microsoft.Extensions.FileProviders.Abstractions, Microsoft.Extensions.FileProviders.Composite, Microsoft.Extensions.FileProviders.Physical, Microsoft.Extensions.FileSystemGlobbing, Microsoft.Extensions.HostFactoryResolver.Sources, Microsoft.Extensions.Hosting, Microsoft.Extensions.Hosting.Abstractions, Microsoft.Extensions.Http, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Abstractions, Microsoft.Extensions.Logging.Configuration, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Logging.Debug, Microsoft.Extensions.Logging.EventLog, Microsoft.Extensions.Logging.EventSource, Microsoft.Extensions.Logging.TraceSource, Microsoft.Extensions.Options, Microsoft.Extensions.Options.ConfigurationExtensions, Microsoft.Extensions.Options.DataAnnotations, Microsoft.Extensions.Primitives, Microsoft.Internal.Runtime.AspNetCore.Transport, Microsoft.NETCore.App.Ref, Microsoft.NETCore.Platforms, System.Collections.Immutable, System.Composition, System.Configuration.ConfigurationManager, System.Diagnostics.DiagnosticSource, System.Diagnostics.EventLog, System.Diagnostics.PerformanceCounter, System.DirectoryServices.Protocols, System.Formats.Asn1, System.Formats.Cbor, System.IO.Hashing, System.IO.Pipelines, System.Memory.Data, System.Net.Http.Json, System.Net.Http.WinHttpHandler, System.Net.ServerSentEvents, System.Numerics.Tensors, System.Reflection.Metadata, System.Resources.Extensions, System.Runtime.Caching, System.Security.Cryptography.Pkcs, System.Security.Cryptography.Xml, System.Security.Permissions, System.ServiceProcess.ServiceController, System.Text.Encodings.Web, System.Text.Json, System.Threading.AccessControl, System.Threading.Channels, System.Threading.RateLimiting (Version 11.0.0-preview.4.26208.110 -> 11.0.0-preview.4.26210.110)
Microsoft.DotNet.Arcade.Sdk, Microsoft.DotNet.Build.Tasks.Archives, Microsoft.DotNet.Build.Tasks.Installers, Microsoft.DotNet.Build.Tasks.Templating, Microsoft.DotNet.Helix.Sdk, Microsoft.DotNet.RemoteExecutor, Microsoft.DotNet.SharedFramework.Sdk (Version 11.0.0-beta.26208.110 -> 11.0.0-beta.26210.110)
Microsoft.Web.Xdt (Version 3.3.0-preview.4.26208.110 -> 3.3.0-preview.4.26210.110)
NuGet.Frameworks, NuGet.Packaging, NuGet.Versioning (Version 7.6.0-rc.20910 -> 7.6.0-rc.21110)
[[ commit created by automation ]]
* Add back package source for dotnet-extensions
* Remove DownloadFile task from RepoTasks
Removed the DownloadFile task from RepoTasks.
* Add quarantined test for AuthHeaderEnvironmentVariableRemoved
* Quarantine IIS NewShim StartupTests failing due to runtime-async
All 18 StartupTests methods in IIS.NewShim.FunctionalTests are
failing after runtime-async was enabled unconditionally in CoreCLR
(dotnet/runtime#126680, dotnet/runtime#126594). The tests return
HTTP 500 even though the app starts successfully in-process.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine IIS NewShim StartupTests only (not other IIS variants)
Only the NewShim variants of StartupTests are failing after
runtime-async was enabled in CoreCLR. Use a partial class to
apply [QuarantinedTest] only to the NewShim assembly, leaving
the IIS, IISExpress, and NewHandler variants unaffected.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Use #if NEWSHIM_FUNCTIONALS instead of partial class for quarantine
Simpler approach: conditionally apply [QuarantinedTest] using the
existing NEWSHIM_FUNCTIONALS define constant instead of adding a
partial class and a new file. No new files needed.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine ShutdownTests.OutOfProcessToInProcessHostingModelSwitchWorks for NewShim
This test hangs in the NewShim variant, blocking the entire work
item. Same runtime-async root cause as the StartupTests failures.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Quarantine entire ShutdownTests class for NewShim
Multiple ShutdownTests methods are failing/hanging in the NewShim
variant. Move to class-level quarantine instead of individual
method quarantine.
Tracking issue: dotnet/runtime#126925
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---------
Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Alexander Köplinger <alex.koeplinger@outlook.com>
Co-authored-by: Eric StJohn <ericstj@microsoft.com>
Co-authored-by: wigodbe <wigodbe@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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@jkotasjkotasjkotas approved these changes
@MichalStrehovskyMichalStrehovskyAwaiting requested review from MichalStrehovskyMichalStrehovsky is a code owner

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