[BUG] Virtual Machine Platform not available" error on Cowork

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?

Hi — adding my details to this known issue.

I'm hitting the same "Virtual Machine Platform not available" error on Cowork. Clicking the prompt to enable the feature and restarting (twice) has not resolved it.

Environment

• OS: Windows 11 Pro, Version 25H2 (OS Build 26200.8246)
• Claude Desktop version: 1.5354.0 (9a9e3d)
• CPU: 12th Gen Intel Core i7-1260P (16 cores)
• RAM: 16GB
• Virtual Machine Platform: Enabled
• Windows Hypervisor Platform: Enabled

Behaviour
Cowork tab shows the "Virtual Machine Platform not available" error immediately on launch. Restarting after enabling the feature makes no difference. Standard Claude chat works fine — only Cowork is affected.

This appears to be the same platform detection bug reported in #32004, #29887, #27420, and #27316. Flagging here to add to the signal — this is affecting paying Pro users who cannot access a feature they're subscribed to.

Happy to provide logs or further diagnostics if helpful.

What Should Happen?

clause should launch cowork

Error Messages/Logs

Steps to Reproduce

.

Claude Model

Opus

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

Version 1.5354.0 (9a9e3d)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_