Can't use Codex app after installed

Resolved 💬 3 comments Opened Feb 5, 2026 by huynd26 Closed Feb 11, 2026

💡 Likely answer: A maintainer (etraut-openai, contributor) responded on this thread — see the highlighted reply below.

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

Version 260204.1342 (531)

What subscription do you have?

Free plan

What issue are you seeing?

{ "error": { "message": "The following tools cannot be used with reasoning.effort 'minimal': web_search.", "type": "invalid_request_error", "param": "tools", "code": null } }

What steps can reproduce the bug?

I just try to send a request after installing Codex, and get the error

My machine: Apple M3 Pro
OS: Tahoe Version 26.2 (25C56)

What is the expected behavior?

_No response_

Additional information

_No response_

View original on GitHub ↗

3 Comments

etraut-openai contributor · 6 months ago

Thanks for the bug report. This is the first time this error has been reported, so it's likely something that's specific to your system.

Did you previously have Codex installed on your computer (either the Codex CLI or an earlier version of the app)? I'm wondering if you have a stale config file. Try deleting ~/.codex/config.toml (or rename it temporarily if you don't want to delete it). You'll need to log in again, but I'm hoping that will eliminate the problem.

mk6f33 · 6 months ago

I had the same issue with the Codex app, CLI works fine. Commenting out personality = "none" from my ~/.codex/config.toml made it work!

I'm guessing https://github.com/openai/codex/pull/10688 hasn't made it to the Codex app yet?

huynd26 · 6 months ago

Thanks for the bug report. This is the first time this error has been reported, so it's likely something that's specific to your system. Did you previously have Codex installed on your computer (either the Codex CLI or an earlier version of the app)? I'm wondering if you have a stale config file. Try deleting ~/.codex/config.toml (or rename it temporarily if you don't want to delete it). You'll need to log in again, but I'm hoping that will eliminate the problem.

The application works well after I delete the ~/.codex/config.toml file. Thanks so much!