The Codex app on Windows displays the error "Sign-in could not be completed".
Open 💬 4 comments Opened Mar 24, 2026 by xiaoyi001yeye
💡 Likely answer: A maintainer (github-actions[bot], contributor)
responded on this thread — see the highlighted reply below.
What version of the Codex App are you using (From “About Codex” dialog)?
latest
What subscription do you have?
pro
What platform is your computer?
windows11
What issue are you seeing?
<img width="1305" height="616" alt="Image" src="https://github.com/user-attachments/assets/403b98bf-0127-431b-a319-217e4b4bc880" />
What steps can reproduce the bug?
After installing the Codex app and restarting the computer, the issue can be reproduced when logging in again. I have reproduced this problem on two Windows machines.
What is the expected behavior?
I hope to avoid this page and use the Codex app normally.
Additional information
I saw someone raise this issue at https://linux.do/t/topic/1777045, but following their steps didn't resolve the problem for me.
4 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
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This is likely a problem with your network configuration — either on your machine or your network.
Same issue: https://github.com/openai/codex/issues/12263. It still hasn't been resolved.
Was using Cloudflare's DNS app, it got disconnected.
After connecting to 1.1.1.1 again, it worked fine for me, so try that.