"Connection Error" needs to give us more information

Support Bug Reports
3

Hey, thanks for the report.

Please try these steps:

  1. Change the default terminal:
  • Settings Ctrl+, > search for terminal.integrated.defaultProfile.windows
  • Switch it to “Git Bash” or “Command Prompt” (not PowerShell)
  • Restart Cursor
  1. Disable HTTP/2:
  • Settings > search for “HTTP/2” > enable “Disable HTTP/2”
  • Restart Cursor
  1. If the issue still happens, run Network Diagnostics:
  • Settings > Network > Run Diagnostics
  • Send a screenshot of the results

More info from similar cases:

Also, can you share if you’re using a VPN or proxy, and what exact commands the agent is trying to run right before the error?

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