[BUG] Claude in Chrome - Persistent "Invalid token or user mismatch" bridge error

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?

Hi,

I'm unable to connect the Claude in Chrome extension to Claude Desktop. The bridge connection consistently fails with "Invalid token or user mismatch" (WebSocket close code 1008).

Environment:

Claude Desktop: v1.569.0 (CCD v2.1.87)
Chrome Extension: v1.0.66
macOS, Chrome 146.0.7680.178
Account: [ugurcanuruk@gmail.com](mailto:ugurcanuruk@gmail.com) (same on both)
Current location: Thailand (account originally from Turkey)

[Claude in Chrome] Connecting to bridge: wss://bridge.claudeusercontent.com/chrome/6de465fb-...
[Claude in Chrome] WebSocket connected, sending connect message
[Claude in Chrome] Bridge error: Invalid token or user mismatch
[Claude in Chrome] Bridge connection closed (code: 1008, duration: 0ms)

What I've tried (all failed):

Reinstalled the Chrome extension
Restarted Chrome and Claude Desktop
Signed out/in on both claude.ai (Chrome) and Claude Desktop
Cleared all claude.ai cookies in Chrome
Toggled extension off/on in chrome://extensions
Completed pairing via extension's pairing.html
Verified "Claude in Chrome" toggle is enabled in Desktop settings
Updated Claude Desktop to latest version
The error occurs immediately on first connection attempt (not after idle), suggesting possible account/token mismatch on the bridge server side rather than a service worker idle issue.

Could you please check for stale state on the bridge server for account ID 6de465fb-1781-47db-9be4-f263bd0d0062?

Thank you.

What Should Happen?

The Chrome extension should successfully connect to Claude Desktop via the WebSocket bridge without "Invalid token or user mismatch" error.

Error Messages/Logs

Bridge bağlantısı her seferinde "Invalid token or user mismatch" hatası ile reddediliyor

Steps to Reproduce

1. Open Claude Desktop (v1.569.0, CCD v2.1.87) - signed in with Google (ugurcanuruk@gmail.com)
2. Open Chrome (146.0.7680.178) with Claude extension v1.0.66 - signed into claude.ai with the same Google account
3. Claude in Chrome toggle is enabled in Desktop Connector settings
4. Extension sidebar works fine within Chrome (can chat)
5. Bridge WebSocket connects but server immediately rejects with "Invalid token or user mismatch" (code 1008)

Error logs (main.log):

[Claude in Chrome] Connecting to bridge: wss://bridge.claudeusercontent.com/chrome/6de465fb-1781-47db-9be4-f263bd0d0062
[Claude in Chrome] WebSocket connected, sending connect message
[Claude in Chrome] Bridge error: Invalid token or user mismatch
[Claude in Chrome] Bridge connection closed (code: 1008, duration: 0ms)

Also observed at startup:

[error] [Claude in Chrome] No user ID available after 2ms

What I've tried (all failed):

• Reinstalled Chrome extension
• Restarted Chrome and Claude Desktop
• Signed out/in on both claude.ai and Claude Desktop (same Google account)
• Cleared all claude.ai cookies and site data in Chrome
• Toggled extension off/on in chrome://extensions
• Completed pairing via pairing.html
• Verified "Claude in Chrome" toggle is enabled in Desktop Connector settings
• Updated Claude Desktop to latest version

Environment: macOS Darwin 25.4.0, currently in Thailand (account from Turkey)

Analysis: Native messaging host runs fine, extension sidebar works in Chrome, but bridge server rejects the token immediately. Pattern matches server-side stale state described in #27055.

Request: Could the bridge server state for account ID 6de465fb-1781-47db-9be4-f263bd0d0062 be reset/cleared?

Related: #27055, #32011, #25736

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.87

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_