No network connection

Support Help
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Since yesterday evenning (CET) I get “no network connection” in the IDE (using any agent). I have good network connection, no VPN. Cursor network diagnostics gives all OK. More details (from IDE):
Request ID: bf4e1370-4e3b-4191-906a-f84183b59b3c
ConnectError: [internal] internal error
at kZc.$endAiConnectTransportReportError (vscode-file://vscode-app/c:/Users/Berndt/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:6330:408452)
at HPo._doInvokeHandler (vscode-file://vscode-app/c:/Users/Berndt/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:7180:11314)
at HPo._invokeHandler (vscode-file://vscode-app/c:/Users/Berndt/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:7180:11056)
at HPo._receiveRequest (vscode-file://vscode-app/c:/Users/Berndt/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:7180:9818)
at HPo._receiveOneMessage (vscode-file://vscode-app/c:/Users/Berndt/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:7180:8635)
at yPt.value (vscode-file://vscode-app/c:/Users/Berndt/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:7180:6727)
at _e._deliver (vscode-file://vscode-app/c:/Users/Berndt/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:49:2962)
at _e.fire (vscode-file://vscode-app/c:/Users/Berndt/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:49:3283)
at Xmt.fire (vscode-file://vscode-app/c:/Users/Berndt/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:6315:12156)
at MessagePort. (vscode-file://vscode-app/c:/Users/Berndt/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:8972:18439)

Steps to Reproduce

fails all the time

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.1.26 (user setup)
VSCode Version: 1.105.1
Commit: f628a4761be40b8869ca61a6189cafd14756dff0
Date: 2025-11-24T05:39:06.655Z
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Windows_NT x64 10.0.26200

Does this stop you from using Cursor

Yes - Cursor is unusable

2

Hey, thanks for the report. Let’s try these troubleshooting steps:

  1. Start a new Agent session. Sometimes the error gets stuck in a specific session.

  2. Check your firewall or antivirus:

    • Temporarily disable Windows Defender or any antivirus software
    • Check if Cursor works while it is disabled

  3. If you have any MCP servers configured:

    • Disable any that you’re not currently using (Cursor has an 80 tool limit)

Could you also share:

  • Which AI model you’re trying to use?
  • Do you have any firewall or antivirus software running?
3

I started a new agent session and now it works! So I am good! I guess all context is lost now..

4

This topic was automatically closed 22 days after the last reply. New replies are no longer allowed.