[BUG] Cowork tab not visible in sidebar despite Pro subscription and latest app version

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?

Environment:

• Claude Desktop version: 1.2773.0 (884b37)
• OS: Windows 11 Enterprise, Version 23H2 (OS Build 22631.6783)
• Plan: Pro subscriber

Issue:
The Cowork tab does not appear in the mode selector alongside Chat and Code, despite meeting all stated requirements.

What I've tried:

• Reinstalled Claude Desktop from claude.com/download
• Signed out and back in
• Toggled Dispatch off/on in Settings → Cowork
• Restarted the app completely

Additional info:

• Settings → Cowork page exists and is accessible (Dispatch toggle is enabled)
• Only Chat and Code tabs are visible in the sidebar
• No relevant errors found in Windows Event Viewer → Application logs

What Should Happen?

The Cowork tab should appear in the mode selector alongside Chat and Code tabs in the Claude Desktop sidebar.

Error Messages/Logs

No relevant errors found in Windows Event Viewer → Application logs.

Steps to Reproduce

1. Install Claude Desktop v1.2773.0 on Windows 11
2. Sign in with a Pro subscriber account
3. Open the app
4. Observe the sidebar - only Chat and Code tabs are visible, no Cowork tab

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

N/A - Claude Code not installed

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_