🔒 Jupyter Failed to start the Kernel even after their fix.

[frozen path]

Every time I create a new venv on python and attach it as a kernel on a notebook, it just stays connecting forever. After following their "fix" (https://github.com/microsoft/vscode-jupyter/issues/17035) I create a new venv but when I try to import os to install packages it gives me this error attached as screenshot.

The log says:

17:48:01.317 [info] Process Execution: ~\Desktop\PythonNotebooks\.env\Scripts\python.exe -c "import jupyter;print('6af208d0-cb9c-427f-b937-ff563e17efdf')"
17:48:01.320 [info] Process Execution: ~\Desktop\PythonNotebooks\.env\Scripts\python.exe -c "import notebook;print('6af208d0-cb9c-427f-b937-ff563e17efdf')"
17:48:01.367 [warn] Error occurred while trying to start the kernel, options.disableUI=false Error: Jupyter cannot be started. Error attempting to locate Jupyter: Running cells with '.env (Python 3.12.7)' requires the notebook and jupyter package.
> at Ty.startServerImpl (~\.vscode\extensions\ms-toolsai.jupyter-2025.8.2025082701\dist\extension.node.js:278:10478)
17:48:01.367 [warn] Kernel Error, context = start Error: Jupyter cannot be started. Error attempting to locate Jupyter: Running cells with '.env (Python 3.12.7)' requires the notebook and jupyter package.
> at Ty.startServerImpl (~\.vscode\extensions\ms-toolsai.jupyter-2025.8.2025082701\dist\extension.node.js:278:10478)
17:48:01.375 [info] Process Execution: ~\Desktop\PythonNotebooks\.env\Scripts\python.exe -c "import pip;print('6af208d0-cb9c-427f-b937-ff563e17efdf')"
17:48:01.379 [info] Process Execution: ~\Desktop\PythonNotebooks\.env\Scripts\python.exe -c "import jupyter;print('6af208d0-cb9c-427f-b937-ff563e17efdf')"
17:48:01.382 [info] Process Execution: ~\Desktop\PythonNotebooks\.env\Scripts\python.exe -c "import notebook;print('6af208d0-cb9c-427f-b937-ff563e17efdf')"
17:48:02.264 [info] Process Execution: ~\Desktop\PythonNotebooks\.env\Scripts\python.exe -m pip list
17:48:02.265 [error] Failed to parse env file ~\Desktop\PythonNotebooks\.env [Error: EISDIR: illegal operation on a directory, read] {
  errno: -4068,
  code: 'EISDIR',
  syscall: 'read'
}
17:48:02.268 [info] Process Execution: ~\Desktop\PythonNotebooks\.env\Scripts\python.exe -c "import pip;print('6af208d0-cb9c-427f-b937-ff563e17efdf')"
17:48:02.328 [info] Process Execution: ~\Desktop\PythonNotebooks\.env\Scripts\python.exe -m pip install -U jupyter jupyter-client<8 pyzmq<25
17:48:10.772 [error] Error in notebook cell execution 
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.

17:48:10.772 [error] Error in execution (get message for cell) 
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.```

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@frozen path

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[frozen path]

For reference, this is what prompts me to run

[naive mango]

Do you have the jupyter-related packages installed into the venv? If you do pip list | grep -P "jupyt|notebook|ipy" in the venv, what do you get?

(I suspect you need to manually pip install the notebook package. Not sure why vscode can't do it)

That error is weird... did you maybe call a directory .env? It seems it confuses some library that expects .env to always be a name of a dotenv file.

[frozen path]

Okay I understand now. Thank you for helping me. I've come across every error on earth when it comes to python and this PC. I did python -m pip install jupyter notebook -U inside of the .env directory. Before I would do that same command OUTSIDE of the .env and it wouldn't work. That was the trick. Thanks!

Everything outputs perfectly fine now

Goat

!close

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