[BUG] Cowork tab not showing on Windows 11 Pro 25H2 — Pro subscriber

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?

The Cowork tab does not appear in the Claude Desktop app. Only the "Chat" tab is visible. I am a Claude Pro subscriber and Cowork has never appeared since I first installed the app.

What Should Happen?

The Cowork tab should appear in the Claude Desktop app alongside the Chat tab, allowing me to use Cowork as advertised for Claude Pro subscribers.

Error Messages/Logs

Steps to Reproduce

1. Install Claude Desktop (latest version) on Windows 11 Pro 25H2
2. Sign in with a Claude Pro account
3. Observe that only the "Chat" tab appears — no Cowork tab
4. Restart the app — issue persists
5. Restart the machine — issue persists

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

N/A - Claude Desktop app

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

• Windows 11 Pro, Build 25H2
• Hyper-V is enabled
• Full clean reinstall attempted (including manual deletion of %appdata% and %localappdata% Claude folders)
• Windows updated from 21H2 to 25H2 during troubleshooting — issue persists
• Claude Pro subscriber
• Related issues: #18770, #25136, #48407