[BUG] Cowork tab missing after update on Windows 11

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?

La pestaña Cowork desapareció tras la actualización automática. Reinstalación completa no resuelve.
Version: 1.2581.0
OS: Windows 11

What Should Happen?

The Cowork tab should be visible and accessible in the Claude Desktop app navigation after updating to the latest version.

Error Messages/Logs

Steps to Reproduce

1. Install or update Claude Desktop app to version 1.2581.0 on Windows 11
2. Launch the application
3. Observe that the Cowork tab is completely absent from the navigation
4. Restart the application — issue persists
5. Fully uninstall, clean residual files from %APPDATA%\Claude and %LOCALAPPDATA%\Claude, reinstall — issue persists

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Unknown — Cowork was working before the latest auto-update.

Claude Code Version

Versión 1.3109.0 (35cbf6)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

The Cowork tab was working normally before the latest auto-update. After the update, the tab is completely gone from navigation with no error message. Virtual Machine Platform is enabled in Windows features. Full uninstall, manual cleanup of residual files, and reinstall did not resolve the issue.

<img width="470" height="254" alt="Image" src="https://github.com/user-attachments/assets/1c7f361f-eead-44e4-b58e-edf3d6d0c269" />