codex - 💡(How to fix) Fix Can't fork a side chat & side chats break after a period of inactivity. [2 comments, 2 participants]

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openai/codex#20977Fetched 2026-05-05 05:55:07
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Error Message

Open a side chat with /side. Hit fork. get error message: "Failed to fork chat'

RAW_BUFFERClick to expand / collapse

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

Version 26.429.30905 (2345)

What subscription do you have?

pro

What platform is your computer?

No response

What issue are you seeing?

Open a side chat with /side. Hit fork. get error message: "Failed to fork chat'

<img width="307" height="165" alt="Image" src="https://github.com/user-attachments/assets/e6534a4d-efa9-485a-b710-e59c10e2766c" />

Also, if you don't use the side chat for a while, it breaks, you get a message along the lines of chat could not be found.

What steps can reproduce the bug?

Uploaded thread: 019ded3d-4c9b-7f02-9ba8-f1ace9a105d3

What is the expected behavior?

No response

Additional information

No response

extent analysis

TL;DR

The issue with the Codex App's side chat failing to fork and occasionally breaking after a period of inactivity may be related to a version-specific bug or a configuration issue.

Guidance

  • Review the uploaded thread (019ded3d-4c9b-7f02-9ba8-f1ace9a105d3) for any clues on what might be causing the "Failed to fork chat" error.
  • Check if there are any known issues or updates available for Version 26.429.30905 (2345) of the Codex App that might address the side chat functionality.
  • Consider reaching out to the support team or community forums for users with the "pro" subscription to see if others are experiencing similar issues.
  • If the issue persists, try to reproduce the error and provide more detailed steps or expected behavior to help narrow down the cause.

Notes

The lack of information about the computer platform and additional details limits the ability to provide a more specific solution. Further investigation into the app's version and subscription-specific features is needed.

Recommendation

Apply workaround: Given the limited information, it's safer to explore workarounds or seek support rather than attempting to upgrade or modify the app without clear guidance.

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