Connection error, again and again

[nezzard1 (nezzard)]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I disabled http2, switched to http1, VPN is not enabled, and it doesn’t work with VPN enabled either. I tried all the options.

Request ID: 51f7f0cf-9d33-4367-b408-8817dfdeb2a3
Connection stalled
LTe: Connection stalled
at $mf (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:9096:4764)
at ova.run (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:9096:8170)
at async qyt.runAgentLoop (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:34190:57047)
at async Wpc.streamFromAgentBackend (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:34239:7695)
at async Wpc.getAgentStreamResponse (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:34239:8436)
at async FTe.submitChatMaybeAbortCurrent (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:9170:14575)
at async Oi (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:32991:3808)

Steps to Reproduce

Agent mode

Operating System

MacOS

Version Information

Version: 2.4.21 (Universal)
VSCode Version: 1.105.1
Commit: dc8361355d709f306d5159635a677a571b277bc0
Date: 2026-01-22T16:57:59.675Z
Build Type: Stable
Release Track: Default
Electron: 39.2.7
Chromium: 142.0.7444.235
Node.js: 22.21.1
V8: 14.2.231.21-electron.0
OS: Darwin arm64 25.2.0

Does this stop you from using Cursor

Yes - Cursor is unusable

[deanrie]

Hey, thanks for the report. I see you already tried HTTP/2 → HTTP/1 and turning VPN off/on, and nothing worked.

Try this workaround (it helped another user with the exact same error):

1. Rename the project folder in Finder (for example MyProject → MyProject_v2)
2. Reopen it in Cursor

This resets a corrupted local index. Here’s a resolved thread with the same stack trace: Connection Error / Stalled Agent requests for hours - #9 by Fares_Bendhiab.

If that doesn’t help, I’ll need a bit more info:

• Network Diagnostics: Cursor Settings > Network > Run Diagnostics (screenshot)
• Console errors: Help > Toggle Developer Tools > Console (screenshot if you see any red errors)
• Are you using a corporate VPN or firewall (Zscaler, McAfee, etc.)?
• Your ISP and rough location?

The team is aware of this issue. Over the last couple of days, a few users reported the same stack trace. The diagnostics will help us find the root cause.

Let me know how it goes.

[nezzard1 (nezzard)]

@deanrie

Try this workaround (it helped another user with the exact same error):

1. Rename the project folder in Finder (for example MyProject → MyProject_v2)
2. Reopen it in Cursor

It seems to have helped.