codex - 💡(How to fix) Fix Can't change model [1 comments, 2 participants]

Official PRs (…)
ON THIS PAGE

Recommended Tools

×6

Utilities matched from this issue’s tags and category — try them while you read without losing context.

GitHub issue graph ai analysis

Paste a GitHub issue URL. We fetch that issue, discover linked issues from bodies/comments/timeline, collect linked pull requests, and produce a structured English report.

The report is written in English Markdown for sharing and archival.

Helpful · Quick feedback

Loading…
GitHub stats
openai/codex#19353Fetched 2026-04-25 06:11:00
View on GitHub
Comments
1
Participants
2
Timeline
8
Reactions
0
Timeline (top)
labeled ×5cross-referenced ×2commented ×1
RAW_BUFFERClick to expand / collapse

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

26.422.21637

What subscription do you have?

the 20 USD

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

2 things:

Couldn’t update model settings. Check your config.toml.

Invalid configuration: invalid type: map, expected a sequence in hooks Open config.toml

Also: Couldn't set up admin sandbox

What steps can reproduce the bug?

Trying to change model

Uploaded thread: 4e482520-bf59-4fa1-952e-ce52cb684e7

toml.txt

8

What is the expected behavior?

No response

Additional information

No response

extent analysis

TL;DR

The issue is likely due to an invalid configuration in the config.toml file, specifically in the hooks section, which is expecting a sequence but receiving a map.

Guidance

  • Check the config.toml file and verify that the hooks section is correctly formatted as a sequence, not a map.
  • Review the provided toml.txt file to identify any potential issues with the configuration.
  • Attempt to update the model settings with a corrected config.toml file to see if the issue is resolved.
  • If the issue persists, try setting up the admin sandbox again to see if it's related to the configuration problem.

Example

No code snippet is provided as the issue is related to a configuration file and not a code-specific problem.

Notes

The issue seems to be specific to the user's configuration file, and without more information about the expected format of the hooks section, it's difficult to provide a more detailed solution.

Recommendation

Apply workaround: Correct the config.toml file to ensure the hooks section is properly formatted as a sequence, as this is the most likely cause of the issue.

Vote matrix · Quick signals

Works
Did the solution work? Tap to confirm.
Easy Fix
Was it a quick fix?
Time Saver
Did it save you time?
Blocking
Was it severely blocking?
Common Issue
Are others likely hitting this too?
Flaky / Intermittent
Is it intermittent?
Verified / Reproducible
Can you reproduce it reliably?
Loading…

Still need to ship something?

×6

Another batch ranked right after the header list — different links, same matching logic.

Back to top recommendations

TRENDING

codex - 💡(How to fix) Fix Can't change model [1 comments, 2 participants]