Cursor cli --connection lost, reconnecting

Support Bug Reports
3

Hey, this is a known HTTP/2 issue in the CLI. The NGHTTP2_ENHANCE_YOUR_CALM error points to exactly that.

Workaround is to switch the CLI to HTTP/1. From your post, it looks like you already tried useHttp1ForAgent: true, but you said it “goes in a loop generating”. Can you clarify what exactly happens?

  • Does the CLI keep showing retry errors over and over, like with HTTP/2?
  • Or does it say it is “generating” but the response never comes back?
  • Or something else?

Also please check a couple of things:

  1. Make sure the config is in the right file, .cursor/cli_config.json in your home directory (C:\Users\offic\.cursor\cli_config.json):

    {
  "network": {
    "useHttp1ForAgent": true
  }
}

  2. Restart the CLI after changing the config.

  3. Try running agent --debug with HTTP/1 and share the log. We can check if the error changes.

Another user with the same issue fixed it this way: Cursor Agent can't connect backend - #3 by MJ_Kim

If HTTP/1 still does not help, please share the debug log for that case too, and confirm if you are using a VPN, proxy, or antivirus.