Hi Agent won't connect

Support Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Request ID: b0f1849c-370f-4a1b-af10-42898a67e901
Always-local singleton connection rejected (cold-start-timeout during ipc-ready, restartCount=6, gaveUp=true)
RetriableError: Always-local singleton connection rejected (cold-start-timeout during ipc-ready, restartCount=6, gaveUp=true)
at Wqi (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9066:8640)
at wcp (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9067:11962)
at Object.classify (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9067:16467)
at gdf (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9067:5856)
at async fWo.runWithSharedTurnRunner (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9067:15819)
at async xz.runAgentLoop (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:20459:3067)
at async lba.streamFromAgentBackend (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:20487:14009)
at async lba.getAgentStreamResponse (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:20487:23432)
at async VIe.submitChatMaybeAbortCurrent (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9229:2399)

Steps to Reproduce

talk to agent

Operating System

Windows 10/11

Version Information

Version: 3.10.20 (system setup)
VS Code Extension API: 1.125.0
Commit: 23b9fb205fe595ea2be29da7214e19762d037fc0
Date: 2026-07-07T07:03:33.071Z
Layout: IDE
Build Type: Stable
Release Track: Default
Electron: 40.10.3
Chromium: 144.0.7559.236
Node.js: 24.15.0
V8: 14.4.258.32-electron.0
xterm.js: 6.1.0-beta.256
OS: Windows_NT x64 10.0.26100

Does this stop you from using Cursor

Yes - Cursor is unusable

8

Hi @Thomas_Lloancy, Thanks for the post! This matches a transient rollout issue on Windows. However, it looks like Cursor starting working for you shortly after this happened right? Let us know if you still see a similar error.

9

yep i have another similar Request ID: b36b336e-6553-4130-85f9-f027a0a683c2
Always-local singleton connection rejected (cold-start-timeout during ipc-ready, restartCount=6, gaveUp=true)
RetriableError: Always-local singleton connection rejected (cold-start-timeout during ipc-ready, restartCount=6, gaveUp=true)
at Wqi (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9066:8640)
at wcp (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9067:11962)
at Object.classify (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9067:16467)
at gdf (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9067:5856)
at async fWo.runWithSharedTurnRunner (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9067:15819)
at async xz.runAgentLoop (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:20459:3067)
at async lba.streamFromAgentBackend (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:20487:14009)
at async lba.getAgentStreamResponse (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:20487:23432)
at async VIe.submitChatMaybeAbortCurrent (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9229:2399)

10

Thank you! @Thomas_Lloancy This request never reached us. Something that has been working for a lot of these types of issues is this series of steps here: Unable to use Cursor Chat – "An unexpected error occurred" - #11 by kevinn

Do you want to try that and lmk how it goes? If still blocked can you run Network Diagnostics in Cursor Settings and let us know what you see?

11

I guess that my problem is very similar: