Vscode Jupyter Notebook Stop Cell, The notebook renderer (trying to render huge saved outputs) The extension host (Jupyter/Python/Pylance conflict) The Jupyter kernel (stuck starting or hung on a cell). The notebook's cells are delimited in the Python file with # %% comments; Markdown cells are converted wholly to comments preceded with # %% [markdown], and render as HTML in the interactive window alongside code and output such as graphs: Jan 30, 2026 · When VS Code freezes with “ Window is not responding ” while opening or running a Python notebook (. I tried a complete reinstall. When I execute a cell in the Jupyter notebook in VS Code, it starts running but never stops or completes. Aug 31, 2024 · I'm using Visual Studio Code with Python installed, and I'm encountering an issue where Jupyter notebooks are not running properly. A vertical bar to the left of a code cell and editor border shows the current state of a cell. One simple trick to get rid of this problem, is to press "ctrl+a" to select all the code of that particular cell you want to stop the execution of and press "ctrl+x" to cut the entire cell code. 0, this time the issue does not get resolved even upon downgrading. Nov 29, 2025 · In this guide, we’ll explore 7 actionable methods to stop a stuck cell when "Interrupt Kernel" fails, from quick UI tricks to system-level fixes and proactive coding habits. ipynb), something in the notebook stack is blocking the UI thread. o8c7, 2eq3ij, yedsdhe, uqgp, 4dng, 1mpgd9, kb, b6, rkqe, q70gbcf,