Can't run code on Jupyter notebook as it keeps crashing

Support Bug Reports
,
5

Hey, thanks for the report. This is a known class of issues with Jupyter in Cursor, and the team is aware and tracking it.

A few questions to help narrow it down:

  1. Are you running the notebook locally, or connecting over SSH to a remote machine?
  2. What exact Cursor version are you on? Go to Cursor > About Cursor and paste the info from there.
  3. When the crash happens, open Developer Tools with Cmd+Shift+P, then run Developer: Toggle Developer Tools, go to the Console tab, and send any red errors you see.

Also, try these quick checks:

  • Turn off Cursor Tab: Settings > Tab > Cursor Tab, disable it, restart Cursor, and use the notebook for a while. Tab autocomplete has been linked to Jupyter freezes in similar reports.
  • Test without extensions: run cursor --disable-extensions in a terminal, open the notebook, and see if the issue still happens.

Related thread with the same pattern: Cursor + Jupyter is an unstable hot mess

Let me know what you find, especially whether turning off Tab makes a difference.