Agent Execution Timed Out Occur

Support Bug Reports
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1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Request ID: c8235e2e-ace8-474c-946f-b24e9ad3d070
{“error”:“ERROR_EXTENSION_HOST_TIMEOUT”,“details”:{“title”:“Agent Execution Timed Out”,“detail”:“The agent execution provider did not respond in time. This may indicate the extension host is not running or is unresponsive.”,“isRetryable”:false,“shouldShowImmediateError”:true,“additionalInfo”:{},“buttons”:[{“label”:“Reload Window”,“reloadWindow”:{}}],“planChoices”:}}
Agent Execution Timed Out [deadline_exceeded]
ConnectError: [deadline_exceeded] Agent Execution Timed Out
at EYw (vscode-file://vscode-app/c:/Users/Atharva/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:36419:30429)
at vscode-file://vscode-app/c:/Users/Atharva/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:36419:37871
at async DYw.createExecInstance (vscode-file://vscode-app/c:/Users/Atharva/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:36419:32408)
at async qn1 (vscode-file://vscode-app/c:/Users/Atharva/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:35519:687951)
at async Z3_ (vscode-file://vscode-app/c:/Users/Atharva/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:35543:63939)
at async PO.execute (vscode-file://vscode-app/c:/Users/Atharva/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:35719:14286)
at async fYw.execute (vscode-file://vscode-app/c:/Users/Atharva/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:36419:10112)
at async Lmh.execute (vscode-file://vscode-app/c:/Users/Atharva/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:36419:2720)
at async N4x.execute (vscode-file://vscode-app/c:/Users/Atharva/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:48185:5786)
at async k7g.buildComposerRequestContext (vscode-file://vscode-app/c:/Users/Atharva/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:48195:4824)

Steps to Reproduce

Open Folder → Enter Prompt → Error

Screenshots / Screen Recordings

Screenshot 2026-06-09 004926.png
Screenshot 2026-06-09 004926.png444×122 6.18 KB

Operating System

Windows 10/11

Version Information

Version: 3.7.21 (user setup)
VS Code Extension API: 1.105.1
Commit: 517f696d8ab6c53eb04fbfdaae705cd146bf3460
Date: 2026-06-07T21:46:09.237Z
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: Windows_NT x64 10.0.19045

Does this stop you from using Cursor

Yes - Cursor is unusable

5

Hey, this is a known issue on Windows. The extension host doesn’t start up in time, and the agent crashes with ERROR_EXTENSION_HOST_TIMEOUT before the request even reaches the server. We don’t have an exact ETA for a fix yet, but these steps help in most cases. Try them in order:

  1. First, click Reload Window in the error popup, or fully close Cursor, then check Task Manager to make sure there are no Cursor.exe processes left, and start it again.

  2. Check if an extension is blocking the extension host. Run this from the command line:

    cursor --disable-extensions

    If the agent works like this, one of your extensions is the cause.

  3. If you have antivirus or endpoint protection, add the Cursor folder to exclusions. On Windows this is a common cause, antivirus can slow down or remove extension host files:

    %LOCALAPPDATA%\Programs\cursor

  4. Clear the cache. Fully close Cursor, delete these folders, then start it again:

    %APPDATA%\Cursor\CachedData
%APPDATA%\Cursor\Cache
%APPDATA%\Cursor\GPUCache

If none of that helps, open PowerShell as admin and send the output of this command so we can check the extension host state:

dir "$env:LOCALAPPDATA\Programs\cursor\resources\app\extensions\cursor-socket"

Also send logs from %APPDATA%\Cursor\logs\ from the latest session, the main.log file and anything with exthost in the filename. That should show exactly where startup is failing.

Let me know which step worked, or if you’re still hitting the error.

8

Hey @Atharva_Pradhan are you still getting the “Agent Execution Timed Out” error? There have been a lot of updates since your post. You were on 3.7.21, and the current stable is 3.9.16. Please update to the latest version and try again.

If it still happens after updating, follow the steps above again, especially cursor --disable-extensions and adding the Cursor folder to your antivirus exclusions. Then send the logs from %APPDATA%\Cursor\logs\ from your latest session, main.log and any files with exthost in the name. That should show where the extension host startup is failing.

If a recent update fixed it, no need to reply. Otherwise, let me know how it goes.