Cannot connect to cursor server. no reply from agent. network error

[Anubhav_Rawat]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

— req info —

Request ID: 620d5580-42c8-41b9-905f-46bac57b0a9b
ConnectError: [unknown] Network disconnected
at iol.$streamAiConnect (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:4814:318523)
at async vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:579:193529
at async Ngn.toolWrappedStream (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:3221:18751)
at async hSs (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:579:216128)
at async xR.handleStreamComposer (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:1449:993)
at async WUs.streamResponse (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:5440:24669)
at async mHs. (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:5528:7342)
at async rHs. (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:5505:966)
at async aHs. (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:5524:3014)
at async uHs. (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:5524:10738)
at async twe. (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:1544:7329)
at async SZ.processCodeBlocks (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:1500:3713)
at async hre.submitChatMaybeAbortCurrent (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:4292:5977)
at async yr (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:4584:88696)

Steps to Reproduce

Initiate chat in agent or chat mode.

Expected Behavior

should get reply

Operating System

Linux

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.5.11
VSCode Version: 1.99.3
Commit: 2f2737de9aa376933d975ae30290447c910fdf40
Date: 2025-09-05T03:48:32.332Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Linux x64 6.14.0-29-generic

For AI issues: add Request ID with privacy disabled

auto mode

Does this stop you from using Cursor

Yes - Cursor is unusable

[deanrie]

Hey, thanks for the report. Could you let me know if this also happens in a new chat? Is everything okay with your network? Are you using a VPN or proxy? Also, please run a network diagnostic.