Mac OS could not open codex because it's malware

Potential duplicates detected. Please review them and close your issue if it is a duplicate.

• #22194
• #21734
• #22135
• #23052

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checked and it's not a duplicate but a mix of 2 issues, that could help to know where the issue is coming from.

I just got the same message after updating Codex.app (the desktop GUI app).

<img width="687" height="646" alt="Image" src="https://github.com/user-attachments/assets/84a5eb54-dff0-44ec-b0c7-842cd67246ae" />

I got this message when I opened Cursor, Codex is already open in the background

got the same issue, anyone found a solution?

I got the same message when opening Kiro IDE. Codex was already open in the background

<img width="453" height="378" alt="Image" src="https://github.com/user-attachments/assets/318adec1-d294-4a65-bafa-f3a265eca73c" />

I'm seeing the same issue today as well, anyone know a fix for it?

“codex” was not opened because it contains malware. This action did not harm your Mac.

<img width="375" height="308" alt="Image" src="https://github.com/user-attachments/assets/7f11f8ae-a44b-4406-a1ea-a47ee863ef32" />

I see the same issue today, I'm on macOS Sonoma 14.6.1 (23G93)
UPD: reinstalling both the Codex CLI and desktop app seems to resolve the issue.

<img width="1228" height="461" alt="Image" src="https://github.com/user-attachments/assets/59f126d0-7765-40ff-842a-c59ae8af4828" />

I had the same issue. For some reason, what worked for me is to do npm install -g @openai/codex again, and this time it worked when I ran codex from the command line.

<img width="251" height="241" alt="Image" src="https://github.com/user-attachments/assets/dbb9be41-babd-4c34-b583-7e0824759e1e" />

Faced same issue; re installed from the codex website; fixed the issue for me.

Try installing it again from open ai, It worked for me

For me, it got resolved just by closing and starting. I did update the app afterwards.

I had the same issue. For some reason, what worked for me is to do npm install -g @openai/codex again, and this time it worked when I ran codex from the command line.

This was the simplest fix

In my case, I directly installed Codex.dmg from OpenAI, and when I tried using it at the command line, I started facing this issue.
Then, following this solution, my issue was fixed.

I also ended up reinstalling the Codex CLI when this happened to me, but it seems as though something is wrong with the package signature making Gatekeeper unhappy. Fixing the package signature shouldn't be out of reach of one of the most valuable companies in the world running one of the most capable software development models one might hope.

I had the same issue mentioned above

apple modal window with message: "codex" will damage your computer. you should move it to the bin"

I tried reinstalling with openai suggested method on mac:

curl -fsSL https://chatgpt.com/codex/install.sh | sh

it somehow detected that the codex installation was managed by brew (how? why?) and offered a reinstall, but after that it would still be blocked and sent a SIGKILL by the OS for good measure

I followed the recommendation above here and run

npm install -g @openai/codex

this fixed the issue

same for me

<img width="541" height="520" alt="Image" src="https://github.com/user-attachments/assets/edc3e572-0dd2-4011-a30e-fbeaed7169b0" />

Just got this while trying to run codex in tmux, desktop app is still open.

Reinstalled codex and it worked:

bun install -g @openai/codex