Cursor 1 stops working

Support Bug Reports
1

I am having trouble with composer 1 not responding at all or when it does it breaks connection all the time. I can’t get it to do anything and it’s been this way for the last 2 (maybe 3) updates for me. I can get other models to respond. auto still works.

Version: 2.2.43 (user setup)
VSCode Version: 1.105.1
Commit: 32cfbe848b35d9eb320980195985450f244b3030
Date: 2025-12-19T06:06:44.644Z
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Windows_NT x64 10.0.19045

Please help!

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2

Hey, thanks for the report.

Please try these steps in order:

  1. Disable HTTP/2: Settings Ctrl+, > search for “HTTP/2” > enable “Disable HTTP/2” > restart Cursor
  2. Start Cursor without extensions: run cursor --disable-extensions in a terminal
  3. Disable MCP servers (if you use them): Settings > Cursor > Tools & MCP
  4. Check your firewall/antivirus, it may be blocking the connection

Please share:

  • Settings > Network > Run Diagnostics: a screenshot of the result
  • Your list of installed extensions (Cmd+Shift+P > Extensions: Show Installed Extensions)
  • Whether you’re using a VPN/proxy or a corporate network

Let me know the results.