OpenAI Codex Severe Bug: Detecting a Git Repository Triggers Native Crash
cocoichisan · ghdev · 2026-07-24
A developer reported on GitHub that the OpenAI Codex Windows desktop app (version 26.721.3996.0) suffers from a severe crashing issue. The native codex.exe process hard-crashes (error code 0xc0000409) whenever a local project is recognized as a Git repository.
Through controlled A/B testing, the user found that renaming the .git directory to prevent detection stops the crashes, while restoring it brings them back. The issue appears unrelated to having zero commits, and might be linked to Git repository detection mechanisms or non-ASCII project paths.
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