[BUG] Windows CLI Auth Error - OAuth Session Expires Before Code Can Be Pasted

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 am in my local file and I tried to log in to Claude. I have already updated the versions and done .gitignore. But when I log in, Claude goes to Chrome and I authorize it. However, before and after I copy the Authentication Code, it displays an "Auth Error" which is why I can't paste the code there. Sometimes I am able to paste it quickly, but it still throws an "Auth Error" anyway.

What Should Happen?

Login Successfully!

Error Messages/Logs

Auth error.

Steps to Reproduce

1. In a native Windows project directory, run claude auth login.
2. Chrome opens; successfully log into Claude Pro and hit Authorize.
3. Observe that PowerShell has already crashed with an Auth Error before or during the exact moment you copy-paste the verification code.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

v2.1.261

Claude Code Version

v2.1.260 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_