Unable to Reach Model Provider Opus4.5, Sonnet4.5 and Gemini 3 Pro

Support Bug Reports
2

Hey, thanks for the report.

This kind of error is usually caused by an extension conflict or network settings. Let’s check a few things:

  1. Check extensions:
  • If you have Nx Console installed, uninstall it and restart Cursor (this is a known conflict)
  • Launch Cursor with a clean profile from the terminal: ‌cursor --user-data-dir=%TEMP%\cursor-test and try Agent mode
  1. Disable HTTP/2:
  • Press CTRL+, to open settings
  • Search for “HTTP/2”
  • Turn on “Disable HTTP/2”
  • Restart Cursor
  1. Collect diagnostics:
  • Cursor Settings > Network > Run Diagnostics, then share a screenshot of the results
  • Help > Toggle Developer Tools > Console, reproduce the error, and share a screenshot of the red errors
  • Copy 2 to 3 new Request IDs after the error (Chat menu > Copy Request ID)
  1. Extra info:
  • What’s your region or country?
  • Are you using a VPN or proxy?
  • What extensions do you have installed?

Similar cases:

Try the steps above and let me know what you find.