Latest 0.21 release registers as virus in Windows defender

Resolved 💬 4 comments Opened Aug 12, 2025 by zagros Closed Aug 28, 2025

What version of Codex is running?

0.21

Which model were you using?

5

What platform is your computer?

Windows 11 Ent

What steps can reproduce the bug?

Uninstall 0.20 and install 0.21 - Windows defender registers the following

What is the expected behavior?

We don't want a virus alert

What do you see instead?

See the screenshot

Additional information

I had the following issue : 👉 https://github.com/openai/codex/issues/2131#event-19076031269

So upgraded to 0.21 that just got released hoping to see it fixed and instead got this virus alert

<img width="553" height="599" alt="Image" src="https://github.com/user-attachments/assets/3107aba8-7bac-40a1-95fc-5ea5e05fa35f" />

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