[BUG] Cannot login vscode claude

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 cannot login to claude code in vscode.

What Should Happen?

<img width="1056" height="1127" alt="Image" src="https://github.com/user-attachments/assets/f82f382a-d6d1-4601-b3d5-d1a395a5a21b" />

It just says: token exchange failed: [object Object]

Error Messages/Logs

Steps to Reproduce

try login in vscode

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

version before 2.1.15 (vscode)

Claude Code Version

I'm using vscode version and not terminal

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_