Can not load python virtual environment

[ducnguyen998]

Type: Bug

When i select python environment, nothing happened. I can not run my .py and .ipynb files

VS Code version: Code 1.107.0 (618725e67565b290ba4da6fe2d29f8fa1d4e3622, 2025-12-10T07:43:47.883Z)
OS version: Windows_NT x64 10.0.26100
Modes:

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-14600K (20 x 3494)
GPU Status	2d_canvas: enabled 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: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	undefined
Memory (System)	31.77GB (19.35GB free)
Process Argv	--crash-reporter-id 83d08008-2422-4789-add0-14a486f5735f
Screen Reader	no
VM	0%

Extensions (14)

Extension	Author (truncated)	Version
copilot-chat	Git	0.35.0
debugpy	ms-	2025.18.0
python	ms-	2025.21.2025121701
vscode-pylance	ms-	2025.10.4
vscode-python-envs	ms-	1.14.0
jupyter	ms-	2025.9.1
jupyter-keymap	ms-	1.1.2
jupyter-renderers	ms-	1.3.0
vscode-jupyter-cell-tags	ms-	0.1.9
vscode-jupyter-slideshow	ms-	0.1.6
cmake-tools	ms-	1.21.36
cpptools	ms-	1.30.0
cpptools-extension-pack	ms-	1.3.1
markdown-all-in-one	yzh	3.6.3

(1 theme extensions excluded)

A/B Experiments

vsliv368:30146709
vswsl492:30256859
pythonvspyt551:31249599
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31436602
aj953862:31281341
nes-set-on:31351930
6abeh943:31336334
cloudbuttont:31379625
todos-1:31405332
3efgi100_wstrepl:31403338
trigger-command-fix:31379601
use-responses-api:31390855
ddidtcf:31399634
je187915:31407605
d5i5i512:31428709
ec5jj548:31422691
terminalsuggestenabled:31431119
cmp-ext-treat:31426748
cp_cls_c_966_ss:31435507
copilot6169-t2000-control:31431385
c0683394:31419495
478ah919:31426797
ge8j1254_inline_auto_hint_haiku:31427726
nes-undo-2:31426804
a5gib710:31434435
38bie571_auto:31426784
request_with_suggest:31435827
rename_enabled:31436409
7a04d226_do_not_restore_last_panel_session:31434268
anthropic_thinking_t:31432745
31c7i317_no_change:31434515
cp_cls_c_1081:31433293
copilot-nes-callisto-trt:31434412
nes-jmp-himalia-001:31437105

[DakotaB75]

Thanks for reporting this.

When selecting a Python environment and nothing happens (no execution, no kernel attach), this is often related to one of these areas:

• Environment discovery failing (venv not detected correctly)
• Interpreter path resolved, but activation or launch failing silently
• Broken or incomplete Python installation on Windows
• Extension state corruption after updates

To help narrow this down, could you please share:

1. How the environment was created (python -m venv, Conda, Poetry, uv, etc.)
2. The full output of Python: Show Output (select Python and Python Locator)
3. Whether python --version works in an external terminal (outside VS Code)
4. The exact path of the selected interpreter shown in VS Code
5. Whether this happens for both .py files and notebooks, or only one

On Windows, similar symptoms have also been caused by:

• Missing VC++ runtime
• Stale interpreter cache
• VS Code launched from a different environment context

Clearing the interpreter cache and reloading the window sometimes helps:

• Python: Clear Workspace Interpreter Setting
• Developer: Reload Window

With logs, this should be reproducible.

[ducnguyen998]

Thank you, i have fixed it by reinstall python extension in vs code.