Codex Desktop crashes and automatically restarts when switching between long-running tasks (Windows, 26.707.9981.0)

What version of the Codex App are you using (From “About Codex” dialog)?

26.707.9981.0

What subscription do you have?

ChatGPT Pro

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

Summary

Codex Desktop consistently crashes and automatically restarts while switching between long-running tasks.

This is not just a performance issue.

The entire ChatGPT.exe process crashes, the application restarts automatically, and then restores the previous session.

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Steps to reproduce

1. Open a workspace containing multiple long-running tasks.
2. Switch between tasks several times.
3. The UI freezes for a few seconds.
4. ChatGPT.exe crashes.
5. Codex Desktop automatically restarts and restores the session.

The issue is reproducible almost every time.

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Expected behavior

Switching between tasks should be smooth without crashing or restarting.

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Actual behavior

The application freezes briefly and then ChatGPT.exe crashes and automatically restarts.

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Additional information

Windows Event Viewer consistently reports:

MoAppCrash
Exception code: 0xc06d007f

I have already submitted a Performance Trace through the application.

Feedback ID:

019f6870-c00e-7fd0-8541-84fff3f84fdf

I also collected a full Windows WER crash dump (several GB) and can provide it if needed.

The issue appears related to restoring or switching between long-running tasks rather than general UI performance.

What steps can reproduce the bug?

Feedback ID: 019f63ec-8d81-70e0-a412-5a2929563157

What is the expected behavior?

Switching between tasks should be smooth.

The application should not freeze, crash, or automatically restart while restoring or switching tasks.

Additional information

This is not only a performance issue.

The entire ChatGPT.exe process crashes and automatically restarts.

Windows Event Viewer consistently reports:

• MoAppCrash
• Exception code: 0xc06d007f

I have already submitted an in-app Performance Trace.

I also collected a full Windows WER crash dump (multiple GB) and can provide it privately if needed.

The issue appears to be related to restoring or switching between long-running tasks rather than general UI performance.