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codex - 💡(How to fix) Fix Infinite configure Sandbox agent loop

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

26.515.10909

What subscription do you have?

Plus

What platform is your computer?

Microsoft Windows NT 10.0.26100.0 x64 (Windows 11 Pro)

What issue are you seeing?

So, after the latest update of Codex App it started asking me to configure agent Sandbox and the problem is: every time I click set up it succeeds... but after a few seconds it asls me to do it again and again and again.. I work on a local drive.

<img width="2560" height="1600" alt="Image" src="https://github.com/user-attachments/assets/44628fce-d039-4610-8ab5-15c13e8f2644" /> <img width="2560" height="1600" alt="Image" src="https://github.com/user-attachments/assets/2d984158-17fc-48d1-ad81-40c6322e5959" />

sandbox.log setup_marker.json Here are the logs

What steps can reproduce the bug?

  1. Open codex App
  2. Click on setup Agent sandbox.
  3. It actually succeeds
  4. And than it asks you to do it again and again and again...

What is the expected behavior?

The Codex App always will tell you that it configured agent sandbox successfully but then it will ask you to click set it up again. And There it is... The infinite loop has started...

Additional information

Here are the additional logs that might help you solve this issue:

sandbox.log setup_marker.json

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#authentication setup#request error#file not found#serialization error#model compatibility

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codex - 💡(How to fix) Fix Infinite configure Sandbox agent loop