Conda environments disappear when ms-python.vscode-python-envs is enabled

[laura-raes]

Type: Bug

Environment

• OS: Ubuntu 25.10
• VS Code: 1.132.0 (.deb installation)
• Python extension: 2026.4.0
• Python Environments extension: 1.36.0
• Conda: 25.7.0 (Miniconda)

Problem

Only the base Conda environment appears in the notebook kernel selector. All other Conda environments are missing.

Conda itself works correctly:

• conda env list lists all environments.
• conda activate <env> works.
• The Python executables inside the environments are valid.

Reproduction

1. Install the Python extension and the Python Environments extension.
2. Open VS Code.
3. Open a Jupyter notebook.
4. Click the kernel selector.

Expected:

• All Conda environments are available.

Actual:

• Only the base environment is shown.

Workaround

Disabling the Python Environments extension (ms-python.vscode-python-envs) immediately restores all Conda environments in the kernel selector.

code --disable-extension ms-python.vscode-python-envs

Relevant error

The VS Code log repeatedly reports:

Error: invalid version no-python

The stack trace originates from the Python extension while processing environments.

Extension version: 2026.4.0
VS Code version: Code 1.132.0 (df53daabb18cd157bdb08c7f01c34df936cf12f4, 2026-08-04T15:30:20Z)
OS version: Linux x64 6.17.0-41-generic
Modes:

• Python version (& distribution if applicable, e.g. Anaconda): 3.12.2
• Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Conda
• Value of the python.languageServer setting: Default

User Settings

languageServer: "Pylance"

Installed Extensions

Extension Name	Extension Id	Version
copilot-chat	Git	0.60.0
debugpy	ms-	2026.6.0
docker	doc	0.18.0
js-debug	ms-	1.117.0
js-debug-companion	ms-	1.1.3
jsts-chat-features	Typ	0.0.4
jupyter	ms-	2025.9.1
jupyter-keymap	ms-	1.1.2
jupyter-renderers	ms-	1.3.0
latex-workshop	Jam	10.17.1
nextflow	nex	1.7.1
python	ms-	2026.4.0
rainbow-csv	mec	3.24.1
remote-containers	ms-	0.466.0
vscode-containers	ms-	2.4.5
vscode-docker	ms-	2.0.0
vscode-js-profile-table	ms-	1.0.11
vscode-jupyter-cell-tags	ms-	0.1.9
vscode-jupyter-slideshow	ms-	0.1.6
vscode-pull-request-github	Git	0.162.0
vscode-pylance	ms-	2026.3.1

System Info

Item	Value
CPUs	Intel(R) Core(TM) Ultra 7 165H (22 x 1651)
GPU Status	2d_canvas: enabled GPU0: VENDOR= 0x10de, DEVICE=0x28b8, DRIVER_VENDOR=Mesa, DRIVER_VERSION=25.2.8 GPU1: VENDOR= 0x8086, DEVICE=0x7d55, DRIVER_VENDOR=Mesa, DRIVER_VERSION=25.2.8 ACTIVE Machine model name: Machine model version: direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off trees_in_viz: disabled_off video_decode: enabled video_encode: disabled_software vulkan: disabled_off webgl: enabled webgpu: enabled webgpu_on_vk_via_gl_interop: enabled webnn: disabled_off
Load (avg)	0, 1, 0
Memory (System)	61.00GB (52.96GB free)
Process Argv	--disable-extension ms-python.vscode-python-envs --crash-reporter-id fd81ff73-b1d8-4d4a-851e-46fdd2694bfa
Screen Reader	no
VM	0%
DESKTOP_SESSION	ubuntu
XDG_CURRENT_DESKTOP	ubuntu:GNOME
XDG_SESSION_DESKTOP	ubuntu
XDG_SESSION_TYPE	wayland

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