Connection Error occurs depending on prompt content (Windows 11)

Support Bug Reports
2

Hey, thanks for the report.

This looks like a known issue affecting certain regions since Dec 29. The symptoms are identical: simple prompts work, but certain content or long requests fail across all models.

To help narrow it down, we need a bit more info:

  1. Region: What region/country are you in?

  2. Console errors: Go to Help > Toggle Developer Tools > Console, reproduce the issue, and send a screenshot of the red errors.

  3. New Request ID: After the error, copy the Request ID (Chat menu > Copy Request ID).

  4. Network: Are you using a VPN or proxy?

In the meantime, please try:

  1. Change DNS:

    • Settings > Network > Change adapter options > connection properties > IPv4
    • Try Cloudflare DNS: 1.1.1.1 and 1.0.0.1
    • Or Quad9: 149.112.112.112 and 9.9.9.9
    • Restart Cursor

  2. Disable HTTP/2:

    • File > Preferences > Cursor Preferences > search for “HTTP” > “HTTP Compatibility Mode” > select HTTP/1.1
    • Restart Cursor

Similar cases:

Send the requested info and I’ll pass it to the team with priority right away.