Cannot start Codex CLI since v0.84.0
Resolved 💬 2 comments Opened Jan 16, 2026 by tttol Closed Jan 16, 2026
💡 Likely answer: A maintainer (etraut-openai, contributor)
responded on this thread — see the highlighted reply below.
What version of Codex is running?
0.84.0, 0.85.0
What subscription do you have?
Enterprise & Edu
Which model were you using?
_No response_
What platform is your computer?
Darwin 24.6.0 arm64 arm
What terminal emulator and version are you using (if applicable)?
_No response_
What issue are you seeing?
I encountered a problem where codex cannot start since I updated to v84.0. The error message is here:
› codex
Error: invalid type: unit variant, expected string only in 'web_searchThe error was not shown when downgrading to v0.81.0
What steps can reproduce the bug?
Run codex in terminal.
What is the expected behavior?
_No response_
Additional information
_No response_
2 Comments
Thanks for reporting.
That means you have an invalid value in your
config.tomlfile. Open it in your editor and search forweb_search. Refer to this documentation for details about config file keys and values.The error message is more cryptic than it should be. I'll look at fixing that.
It worked! I had a small mistake in my config.toml. Thanks for your help.