{"detail": "Bad Request"}
Resolved 💬 5 comments Opened Feb 18, 2026 by MrToph Closed Feb 23, 2026
💡 Likely answer: A maintainer (github-actions[bot], contributor)
responded on this thread — see the highlighted reply below.
I keep receiving {"detail": "Bad Request"} in the middle of responses using the codex macOS app.
See feedback id 019c6a8d-617a-71d1-8b2f-a3fdaa9590b6.
happens with and without VPN.
5 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
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This appears to be correlated to unusually long sessions and/or user prompts. We're continuing to investigate.
Closing as duplicate of https://github.com/openai/codex/issues/10571.
This issue occurs again.
Same problem. MacOS 27.0 heta.
Model 5.6 xhigh.
Long session with Codex 1.4.6.
After closing de session and resuming it, it works again
Same problem
MacOS 26.6
Version 26.803.41515
Model 5.6 Max