[BUG] [BUG] Cowork never initializes on Windows 11 Pro 25H2 — %APPDATA%\Claude completely empty after install and reinstall

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: latest version (freshly reinstalled)
OS: Windows 11 Pro, Version 25H2, Build 26200.8328
Subscription: Pro
Virtual Machine Platform: Enabled
Windows Hypervisor Platform: Enabled
CoworkVMService: Running (Status: Running, StartType: Automatic)

What's wrong
The Cowork tab shows "Virtual Machine Platform not available" and prompts me to enable the feature and restart. Enabling and restarting does not resolve the issue. The process repeats in a loop.
Cowork never initializes at all. After both the original install and a full uninstall/reinstall:

%APPDATA%\Claude folder exists but is completely empty
%APPDATA%\Claude\logs\cowork_vm_node.log — does not exist
%APPDATA%\Claude\vm_bundles — does not exist

No logs are ever generated. The VM never reaches the download or initialization stage.
Steps to reproduce

Install Claude Desktop (latest) on Windows 11 Pro 25H2
Ensure Virtual Machine Platform, Windows Hypervisor Platform are enabled
Confirm CoworkVMService is running via Get-Service CoworkVMService
Open Claude Desktop and navigate to Cowork tab
Observe "Virtual Machine Platform not available" error
Check %APPDATA%\Claude — folder is empty, no logs, no vm_bundles

What Should Happen?

Cowork should detect virtualization is available, download the VM bundle, and initialize the workspace.

Error Messages/Logs

Actual behavior
Nothing is written to %APPDATA%\Claude at all. No logs, no bundle. Cowork never progresses past the error screen.
What I've tried

Enabled Virtual Machine Platform and restarted (multiple times)
Ran Remove-Item -Recurse -Force "$env:APPDATA\Claude\vm_bundles" — folder didn't exist
Restarted CoworkVMService via PowerShell
Full uninstall, reboot, and reinstall of Claude Desktop
Confirmed CoworkVMService is Running after reinstall

Related issues: #29887, #32004, #36365

Steps to Reproduce

What I've tried

Enabled Virtual Machine Platform and restarted (multiple times)
Ran Remove-Item -Recurse -Force "$env:APPDATA\Claude\vm_bundles" — folder didn't exist
Restarted CoworkVMService via PowerShell
Full uninstall, reboot, and reinstall of Claude Desktop
Confirmed CoworkVMService is Running after reinstall

Related issues: #29887, #32004, #36365

Claude Model

Not sure / Multiple models

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

1.5354.0.0

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_