An unexpected error occured on our servers

Support Bug Reports
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1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I tried to run any chat, other with skill and not with skill. Composer 2.5. All the time it says firstly “Planning next move…” then “Reconnecting…” and it stucks on reconnecting. After about 2 minutes it timeouts and displaying this error id:

Request ID: db2d5f88-30b4-48a5-93cf-234976471d61
[unknown] Network disconnected
RetriableError: [unknown] Network disconnected
at Nk1 (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:35723:27652)
at Eag (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:35723:26381)
at Wk1 (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:35724:7469)
at Mag.run (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:35724:12367)
at async zle.runAgentLoop (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:48116:2927)
at async W$g.streamFromAgentBackend (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:48187:13900)
at async W$g.getAgentStreamResponse (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:48187:22728)
at async hut.submitChatMaybeAbortCurrent (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:35854:1970)
at async Object.oo [as onSubmit] (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:47078:33305)
at async vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:44977:103149

I tried to sign out and sing in again. In some cases I couldnt event properly sign in back again.

How to solve it?

Steps to Reproduce

Run any prompt in chat using Composer 2.5 and wait for timeout

Expected Behavior

It should communicate with developer and respond

Screenshots / Screen Recordings

Zrzut ekranu 2026-06-18 o 16.20.16.png
Zrzut ekranu 2026-06-18 o 16.20.16.png791×110 6.04 KB

Operating System

MacOS

Version Information

Version: 3.7.42
VS Code Extension API: 1.105.1
Commit: 5702c9cfca656d8710fad58402fe37f14345e3a0
Date: 2026-06-15T19:39:42.738Z
Layout: editor
Build Type: Stable
Release Track: Default
Electron: 39.8.1
Chromium: 142.0.7444.265
Node.js: 22.22.1
V8: 14.2.231.22-electron.0
xterm.js: 6.1.0-beta.256
OS: Darwin arm64 24.6.0

For AI issues: which model did you use?

Composer 2.5

Does this stop you from using Cursor

Yes - Cursor is unusable

5

I’ve been dealing with the same issue since yesterday and I’m using Windows. I’ve already tried everything but It isn’t working.

6

Hey Oskar, I just got an answer from the support and it worked for me. Check it out (I just had to do the first step):

1. Apply the HTTP/1.1 fix (most effective for this pattern):

  • Go to Cursor Settings > Network
  • Set HTTP Compatibility Mode to HTTP/1.1
  • Fully quit Cursor via the system tray or Task Manager (just closing the window doesn’t fully quit on Windows)
  • Relaunch and test the Agent

2. Run the network diagnostic in the same Network settings tab:

  • Click Run Diagnostics
  • Share what you see, especially any SSL warnings mentioning a proxy CA (Zscaler, Fortinet, Palo Alto, or similar)

3. Switch to a different model (e.g., Claude Sonnet 4 or a GPT model) to check whether the error affects just Agent/Auto or all models.

8

Okay I had to do update of macOS from Sonoma 15.7.3 to the newest Tahoe 26.5.1 and it resolved the issue :sweat_smile: