Cursor Agent can't connect backend

[MJ_Kim]

Hi. Today, I installed Cursor CLI, but not working. Cursor IDE works fine.

————————————————————————

Cursor Agent v2026.02.27-e7d2ef6

~/.local/share/…/versions/2026.02.27-e7d2ef6

(cwd is not a git repository, cursor rules and ignore files don’t apply)

Hi

— Connection lost. Retry attempted. —

— Connection lost. Retry attempted. —

— Connection lost. Retry attempted. —

— Connection lost. Retry attempted. —

— Connection lost. Retry attempted. —

— Connection lost. Retry attempted. —

⬢ Reconnecting…

┌─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐

│ → Add a follow-up ctrl+c to stop │

└─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘

Auto

/ commands · @ files · ! shell

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[MJ_Kim]

I fixed. Disable HTTP/2 for Cursor CLI in .cursor/cli_config.json.

“network”: {

"useHttp1ForAgent": true

},

[1ckpwee]

it’s working, thanks!