codex - 💡(How to fix) Fix Codex Cloud task fails with "An unknown error occurred" [1 participants]

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openai/codex#20253Fetched 2026-04-30 06:31:03
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Error Message

Codex Cloud task fails after ~1m12s with "An unknown error occurred". The task was completed or an understandable error

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What issue are you seeing?

Codex Cloud task fails after ~1m12s with "An unknown error occurred". The Logs tab is empty. The same task failed 3 times

What steps can reproduce the bug?

  1. Fork dotnet/roslyn.
  2. Start any non-trivial Codex Cloud task on the fork

What is the expected behavior?

The task was completed or an understandable error

Additional information

No response

extent analysis

TL;DR

Investigate the Codex Cloud task configuration and the forked dotnet/roslyn repository for potential issues causing the task to fail with an unknown error.

Guidance

  • Verify that the forked dotnet/roslyn repository is correctly configured and up-to-date, as issues in the repository might be causing the task to fail.
  • Check the Codex Cloud task settings to ensure that the task is properly set up and that there are no obvious configuration issues.
  • Attempt to run a simpler Codex Cloud task on the forked repository to see if the issue is specific to the current task or a more general problem.
  • Consider reaching out to the Codex Cloud support team for further assistance, as the empty Logs tab suggests a potential issue with the platform itself.

Notes

The lack of information in the Logs tab and the generic error message make it difficult to provide a more specific solution. Further investigation into the task configuration and the forked repository is necessary to identify the root cause of the issue.

Recommendation

Apply workaround: Attempt to run the task with a smaller input or a different configuration to see if the issue persists, as this may help identify if the problem is related to the task itself or the Codex Cloud platform.

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codex - 💡(How to fix) Fix Codex Cloud task fails with "An unknown error occurred" [1 participants]