[BUG]
Open 💬 3 comments Opened Jun 20, 2026 by pps-official
Preflight Checklist
- [x] I have searched existing issues and this hasn't been reported yet
- [x] This is a single bug report (please file separate reports for different bugs)
- [x] I am using the latest version of Claude Code
What's Wrong?
i was starting a new session and this error message came up: Please run /login · API Error: 401 Invalid
authentication credentials. i have repeatedly following the account authentication steps and pasted the
authorisation code, but it loops back to the same error message again and again
What Should Happen?
the session should begin as usual, not keep requesting login authorisation
Error Messages/Logs
Please run /login · API Error: 401 Invalid authentication credentials
Steps to Reproduce
no clue
Claude Model
Sonnet (default)
Is this a regression?
Yes, this worked in a previous version
Last Working Version
_No response_
Claude Code Version
Claude Code version is 2.1.183
Platform
Anthropic API
Operating System
Windows
Terminal/Shell
PowerShell
Additional Information
_No response_
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