Debugging Jupyter Notebook cells: "Ipykernel setup required for this feature", but ipykernel is installed

[marcopist]

Applies To

• [x] Notebooks (.ipynb files)
• [ ] Interactive Window and\/or Cell Scripts (.py files with #%% markers)

What happened?

Steps:

• Opening any jupyter notebook and clicking debug cell.

Expectation

• A debugger session launches

Result

• I get this popup:

Other notes

ipykernel is installed in the virtual environment & kernel used by VS Code.

If I reload the VS Code window the debugger sometimes launches, but only once.

VS Code Version

1.93.1

Jupyter Extension Version

v2024.8.1

Jupyter logs

10:03:27.181 [info] Starting debugging with mode 1
10:03:27.203 [info] Ipykernel check failed: Unknown
10:04:44.070 [info] Starting debugging with mode 1
10:04:44.092 [info] Ipykernel check failed: Unknown

Coding Language and Runtime Version

Python v 3.10

Language Extension Version (if applicable)

v2024.14.1

Anaconda Version (if applicable)

No response

Running Jupyter locally or remotely?

Remote