Codex is unusable on Windows - Not Responding.- June 10 2026
What version of the Codex App are you using (From “About Codex” dialog)?
v26.608.12217 is unusable on WIndows - Not Responding.
What subscription do you have?
Pro
What platform is your computer?
Microsoft Windows NT 10.0.26200.0 x64
What issue are you seeing?
The app opens slowlly. When I go to a project to begin work, I enter a prompt the app then becomes unresponsive. I get the windows message that the "Application is Not Responding". I choose to wait for the application. When it is finally done with that one prompt, I can then do another action prompt of open something else up or change settings and again the app becomes nonresponsive. The app is absolutely unusable. I am on some tight deadlines, and I have come to rely on Codex. Please offer a workaround while you address the root cause. If you need more data, just ask.
What steps can reproduce the bug?
Send a prompt the application becomes nonresponsive.
What is the expected behavior?
It just works - when it is running a task the UI should be responsive and allow other activity in that project or any other,
Additional information
I am running 5.5 Extra High - normal speed
6 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
Powered by Codex Action
Does your project use Git? If so, do you still experience performance issues if you open a copy of the project without the
.gitfolder in it?Maybe OpenAi should use GPT-5.5 to resolve this issue ;) ? or maybe windows users are not their target ;) ? So far, all they can do is find duplicate tickets instead of fixing the issues.
Since last night I've been getting the same error:
<img width="1035" height="1883" alt="Image" src="https://github.com/user-attachments/assets/6abd5b08-391c-42d6-9461-09dad16b7909" />
Windows 11 - Version 10.0.26200 Build 26200
What I've done:
Checked Extension Host logs, nothing of importance there.
Renamed and deleted the usual culprits:
%APPDATA%\Code
%USERPROFILE%\.vscode
%USERPROFILE%\.codex
Uninstalled Codex, reinstalled.
Disabled, then Developer: Restart Extension Host, then enabled.
Tried it with Admin which does work!
Uninstalled VsCode and reinstalled.
@kevinfoley the problem still occurs without the .git folder present:
<img width="1019" height="578" alt="Image" src="https://github.com/user-attachments/assets/5f116708-cfad-48e0-9a05-6aaec415a9d5" />
Doh now its bricked my admin account too, it did load the Codex panel as shown. Codex was very slow and laggy as I pasted about 10 lines of text, then BAM!
<img width="1269" height="509" alt="Image" src="https://github.com/user-attachments/assets/0a63d207-1482-4549-b815-0460ca58eaa8" />
issue seems to have cleared with build 26.609.30741