Hey thanks for the report.
Quick workaround first:
- Cursor Settings (not VS Code settings) > Indexing & Docs
- Turn off Index Repositories for Instant Grep (BETA). This has been a common trigger on larger projects
- If that doesn’t help, also turn off Codebase Indexing
- Restart Cursor
Chat, Agent, and Tab will still work without it.
Also check:
Open Process Explorer Cmd+Shift+P > Developer: Open Process Explorer. Next time it starts freezing, check what’s eating CPU or RAM. If you see extensionHost spiking, that confirms it’s the indexing subsystem.
Would help to know:
- Roughly how large is the project? File count
- Do you see any Extension host terminated unexpectedly popups before the crash?
- Any VPN software installed, even if not actively running? Some VPN clients conflict with Cursor’s local indexing. One user fixed their crashes by fully uninstalling their VPN Extension host terminated unexpectedly no matter what i try - #9 by Brian_Walch
- Logs from
%APPDATA%\Cursor\logs\(the newest session folder) would be very helpful for pinpointing the root cause
The fact that you were running 3 to 5 agents fine before the update and now even 1 causes crashes points to something in the update itself, not your project size. Let me know what you find.