Cursor Agent connection error on macOS across all models, including Auto

Support Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I’m experiencing a consistent connection issue with Cursor Agent on macOS. I have an active Pro plan, but every Agent request fails with a connection error.

Issue
Whenever I enter a prompt in the Agent panel and run it, Cursor returns:

“Connection failed. Please try again, or contact support if the issue persists.”

This happens across all models, including Auto, and retrying does not resolve it.

Steps to Reproduce

Open Cursor IDE on macOS

Open any project or even a blank workspace

Open the Agent panel

Enter any prompt, for example: “how can I test this locally?”

Run the request with Auto or any other model

The request fails immediately with a Connection Error

Clicking Try again results in the same error

Expected Behavior

Agent should connect successfully and return a response instead of failing for every prompt

Screenshots / Screen Recordings

2.jpg
2.jpg596×243 23.7 KB

Operating System

MacOS

Version Information

Product: Cursor IDE
OS: macOS

Version: 2.6.14
VSCode Version: 1.105.1
Commit: eb1c4e0702d201d1226d2a7afb25c501c2e56080
Date: 2026-03-08T15:36:54.709Z
Build Type: Stable
Release Track: Default
Electron: 39.6.0
Chromium: 142.0.7444.265
Node.js: 22.22.0
V8: 14.2.231.22-electron.0
OS: Darwin arm64 25.0.0

For AI issues: which model did you use?

All models, including Auto

For AI issues: add Request ID with privacy disabled

Request IDs

d9265342-0942-4807-be99-e24bcbd0f69f
15fd984-8e9d-4adc-9fc2-d165b821d710
3095a0c9-a81c-4aec-8354-7951f2bf3ac0

Additional Information

I am on a Pro plan

The app opens normally, but Agent requests fail consistently

The issue appears in normal projects and with simple prompts

Screenshot attached showing the error

Does this stop you from using Cursor

Yes - Cursor is unusable

3

  • Are you using a VPN or a corporate proxy? No

  • Do you have any MCP servers set up? No

  • Also tried both HTTP/2 and HTTP/1

  • Network > Run Diagnostics - success

3
3682×683 26.8 KB

5

Hey, I checked the request IDs you shared. Those requests aren’t reaching our servers at all, so this looks like a local auth issue, not a server-side problem.

It looks like you recently reset your password. Web re-auth worked, but the Cursor IDE may still be using an old auth token.

Try this:

  • In Cursor, go to Cursor Settings (top-right gear icon) and click Sign Out
  • Fully quit Cursor (Cmd+Q, not just closing the window)
  • Reopen Cursor and Sign In again

This should force the IDE to get a fresh token.

If that doesn’t fix it, try these:

  • Open the Command Palette Cmd+Shift+P and run Developer: Reload Window
  • If it’s still stuck, try reinstalling Cursor while keeping your settings

Let me know how it goes.

6

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