Bug: "Unable to handle" error when selecting Python interpreter from uv-managed .venv

[camhelkuik]

Type: Bug

Environment

• OS: Windows 11
• Editor: Kiro (VS Code-based)
• Python Extension version: v2026.4.0
• Python: 3.13.5
• Package manager: uv 0.11.1

Steps to Reproduce

1. Create a new project using uv init
2. Run uv venv and uv sync to create the virtual environment
3. Open the project in the editor
4. Ctrl + Shift + P → "Python: Select Interpreter"
5. Choose "Enter interpreter path..." → "Find..."
6. Navigate to .venv\Scripts\python.exe and select it

Expected Behavior

The interpreter should be set to .venv\Scripts\python.exe without errors.

Actual Behavior

Error message: "Unable to handle c:\Users[username]....venv\Scripts\python.exe"

The interpreter is not set. The .venv is valid and .venv\Scripts\python.exe --version returns Python 3.13.5 successfully from the terminal.

Workaround

Manually setting the interpreter path in .vscode/settings.json works:

{
    "python.defaultInterpreterPath": "${workspaceFolder}\\.venv\\Scripts\\python.exe"
}

Additional Info

The virtual environment was created by uv (v0.11.1). The issue appears to be with the interpreter picker UI, not the venv itself.

Extension version: 2026.4.0
VS Code version: Code 1.112.0 (07ff9d6178ede9a1bd12ad3399074d726ebe6e43, 2026-03-17T18:09:23Z)
OS version: Windows_NT x64 10.0.22631
Modes:

• Python version (& distribution if applicable, e.g. Anaconda): 3.13.5
• Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): System
• Value of the python.languageServer setting: Default

User Settings

languageServer: "Pylance"

</p>
</details>

<details>
<summary>Installed Extensions</summary>

|Extension Name|Extension Id|Version|
|---|---|---|
|astronomic-theme|mys|0.9.2|
|bruno|bru|4.5.0|
|debugpy|ms-|2025.18.0|
|js-debug|ms-|1.112.0|
|js-debug-companion|ms-|1.1.3|
|json-sort-and-compare|far|0.0.6|
|python|ms-|2026.4.0|
|remote-wsl|ms-|0.104.3|
|ruff|cha|2026.38.0|
|vscode-js-profile-table|ms-|1.0.10|
|vscode-pylance|ms-|2026.1.1|
|vscode-python-envs|ms-|1.24.0|
</details>

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