[BUG] Cowork "Virtualization is not available" on Windows 11 Pro 24H2 — all virtualization features enabled

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?

What's Wrong?
Cowork shows "Virtualization is not available — Claude's workspace requires
Virtual Machine Platform, but the virtualization service isn't responding.
Restart your computer to resolve this." Restarting does not resolve it.

Environment

• OS: Windows 11 Pro Version 24H2 (OS Build 26100.8037)
• Claude Desktop: latest version (reinstalled clean)
• Install type: downloaded from claude.ai/download, run as Administrator

Virtualization Status (all confirmed Enabled via PowerShell)

• VirtualMachinePlatform: Enabled
• HypervisorPlatform: Enabled
• Microsoft-Hyper-V-All: Enabled
• Microsoft-Hyper-V: Enabled
• Microsoft-Hyper-V-Tools-All: Enabled
• Microsoft-Hyper-V-Management-PowerShell: Enabled
• Microsoft-Hyper-V-Hypervisor: Enabled
• Microsoft-Hyper-V-Services: Enabled
• Microsoft-Hyper-V-Management-Clients: Enabled

Steps taken

1. Enabled all virtualization features via PowerShell as Administrator
2. Set bcdedit /set hypervisorlaunchtype auto
3. Restarted multiple times
4. Performed clean reinstall of Claude Desktop (cleared LocalCache)
5. Error persists unchanged

Expected behavior
Cowork detects that virtualization is fully enabled and launches the workspace.

Actual behavior
Cowork permanently shows the "Virtualization is not available" error.

Related issues: #27316, #29887, #32004, #32233

What Should Happen?

Cowork should detect that virtualization is fully enabled and successfully launch the workspace VM without errors.

Error Messages/Logs

Steps to Reproduce

1. Install Claude Desktop (latest version) on Windows 11 Pro 24H2
2. Open Claude Desktop
3. Click on the Cowork tab
4. Error appears immediately: "Virtualization is not available —

Claude's workspace requires Virtual Machine Platform, but the
virtualization service isn't responding."

1. Restarting the computer does not resolve it
2. Performed clean reinstall of Claude Desktop — error persists

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Claude 1.1.7714.0

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_