Codex RescueCodex troubleshooting
Codex Login & Authentication Errors
Troubleshoot Codex login failures, browser callbacks and authentication problems. Identify the affected client and follow source-linked recovery steps.
A browser sign-in can finish while the Codex client still waits for a callback. Authentication failures can also depend on the selected account or client environment. Use the login guide to locate the failing step before signing in again.
What to check first
- Note whether the failure happens in the browser or the Codex client.
- Check that the expected account and workspace are selected.
- Keep tokens and authorization codes out of screenshots and support messages.
Login troubleshooting guides
Codex sign-in fails: which stage actually broke
Identify the exact line your client printed — a token-exchange error, a localhost:1455 callback failure, or no error at all — because each points to a different stage.
Reached a usage limit instead? Check Codex usage limits and reset times.