[BUG] Claude Desktop - COWORK not present in app - Issue #25136

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?

Cowork tab completely absent from navigation — no Chat/Cowork toggle visible

OS: Windows 11 Pro x64 OS Build 26200.8246
Claude Desktop version 1.6259.1 (5095e7)
Cowork readiness check: Passed after enabling Virtual Machine Platform
Symptom: Cowork tab completely absent from navigation — no Chat/Cowork toggle visible
%APPDATA%\Claude folder: Does not exist after clean reinstall — no logs generated, no initialization attempted
Steps already completed: Full uninstall, deleted %APPDATA%\Claude and %LOCALAPPDATA%\Claude, removed AppX package via PowerShell, rebooted, fresh reinstall from claude.com/download

What Should Happen?

COWORK should appear in the desktop app.

Error Messages/Logs

No errors presented; COWORK is simply missing from the desktop app.

Steps to Reproduce

N/A - Simply open the desktop app.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

1.6259.1 (5095e7)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_