[BUG] Chrome bridge auth failure + OAuth redirect URI error in v2.1.81

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?

Claude in Chrome extension fails to connect to Claude Desktop despite both being logged into the same Claude Max account. The extension shows "Check your Claude in Chrome account - accounts don't match" error even though both apps are using the same Gmail account. Clicking reconnect always opens extension settings instead of reconnecting.

What Should Happen?

Claude in Chrome should successfully connect to Claude Desktop when both are signed into the same Claude Max subscription account.

Error Messages/Logs

Dialog error: "The Chrome extension needs to be signed in with the same account as Claude Desktop."

Bridge error: Invalid token or user mismatch — bridge at wss://bridge.claudeusercontent.com/chrome/ requires scope user:sessions:claude_code but Desktop OAuth token only has user:inference user:office

CLI re-auth error: Authorization failed: Redirect URI http:/localhost:52281/callback is not supported by client

Steps to Reproduce

1. Log into Claude Desktop v1.1.8359 with Claude Max account (Gmail)
2. Install Claude in Chrome extension, log in with same Gmail account
3. Chrome extension fails to connect with account mismatch error
4. All of the following were attempted and did NOT resolve the issue:

• Logged out and back into Claude Desktop
• Logged out and back into Chrome extension
• Reinstalled Chrome extension
• Full Chrome restart
• Logged out and back into Claude Code CLI
• Verified ANTHROPIC_API_KEY is not set
• Confirmed same Gmail account on all three apps

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.81

Claude Code Version

Claude account with subscription (Claude Max)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

• Claude Desktop version: 1.1.8359 (64248d)
• Both Claude Desktop and Chrome extension confirmed on same account
• Claude Desktop correctly shows Max plan after re-login
• Root cause appears to be token scope mismatch: Desktop token has user:inference user:office but bridge requires user:sessions:claude_code