{"detail": "Bad Request"}

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.

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 #10571.

This issue occurs again.

Version 26.727.40816
Codex Desktop App
MacOS
Model 5.5 (High)

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

Same problem here,
macOS 27 beta 6
GTP 5.6 Sol

嘿朋友我也遇到了这个情况
要反复重启才可以macOS 26,6
GPT 5.6 Sol high

在ChatGPT Work反覆遇到這個狀況
macOS 26.5.1
GPT-6 Astra 極高
用最新的 ChatGPT/Codex desktop app

same problem
windows 11
GPT-6 Astra
Codex cli

Same here 🙁
OSX
codex-cli 0.160.0
GPT-6.1-Sol high

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{"detail": "Bad Request"} #12119

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github-actions commented on Feb 18, 2026

etraut-openai commented on Feb 23, 2026

Vintotan commented on Aug 1, 2026

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MariosChartsias commented on Sep 13, 2026

lateshift commented on Oct 8, 2026

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