### What version of Codex is running? codex-cli 0.20.0 ### Which model were you using? _No response_ ### What platform is your computer? Darwin 24.6.0 arm64 arm ### What steps can reproduce the bug? - `codex login` - Follow prompts - Authorize Codex CLI - Redirect to localhost:1455 ``` Error response Error code: 500 Message: Token exchange failed: . Error code

500 errors on sign in - urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed

Resolved 💬 8 comments Opened Aug 11, 2025 by rhymiz Closed Aug 18, 2025

💡 Likely answer: A maintainer (seratch, member) responded on this thread — see the highlighted reply below.

What version of Codex is running?

codex-cli 0.20.0

Which model were you using?

_No response_

What platform is your computer?

Darwin 24.6.0 arm64 arm

What steps can reproduce the bug?

codex login
Follow prompts
Authorize Codex CLI
Redirect to localhost:1455

Error response
Error code: 500

Message: Token exchange failed: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1020)>.

Error code explanation: 500 - Server got itself in trouble.

What is the expected behavior?

_No response_

What do you see instead?

_No response_

Additional information

_No response_

View original on GitHub ↗

8 Comments

seratch member · 11 months ago

I am not sure if this works for you, but checking https://github.com/openai/codex/issues/2044 may help.

rhymiz · 11 months ago

@seratch thanks for sharing. Didn't work, unfortunately.

arthosbraga · 11 months ago

It still doesn't work

Jimyung6642 · 11 months ago

Re-installing codex worked in my case.

rhymiz · 11 months ago

Reinstalling hasn't worked for me

rhymiz · 11 months ago

I no longer have this issue in codex-cli 0.22.0

seratch member · 11 months ago

Thank you so much for checking the latest version 👍

eric-vandenakker · 11 months ago

resolved for me with latest version as well