[BUG] Cowork MSIX manifest missing hypervisor capability – CoworkVMService cannot access Hyper-V

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?

<Capabilities>
<rescap:Capability Name="runFullTrust" />
<rescap:Capability Name="localSystemServices" />
<rescap:Capability Name="packagedServices" />
<rescap:Capability Name="unvirtualizedResources" />
<Capability Name="internetClient" />
<!-- MANGLAR: rescap:Capability Name="hypervisor" -->
</Capabilities>

What Should Happen?

Skriv dette i feltet:

The MSIX manifest for Claude Desktop is missing the hypervisor restricted capability, which prevents CoworkVMService from accessing Hyper-V on Windows 11 Pro.
The Capabilities section in AppxManifest.xml currently contains:

runFullTrust
localSystemServices
packagedServices
unvirtualizedResources
internetClient

It is missing rescap:Capability Name="hypervisor", which is required for the VM to start. As a result, Cowork always fails with HYPERVISOR_SERVICE_ERROR on MSIX installations, even when Hyper-V is fully enabled and verified working at the system level.
Expected fix: Add <rescap:Capability Name="hypervisor" /> to the MSIX manifest and re-sign the package.
The EXE installer is not a viable workaround because it also installs an MSIX package and reverts to it on every update.

Error Messages/Logs

Steps to Reproduce

Skriv dette:

Install Claude Desktop on Windows 11 Pro using the official EXE installer from claude.ai/download
Open Claude Desktop and navigate to the Cowork tab
Observe error: "Virtualization is not available. Claude's workspace requires Virtual Machine Platform, but the virtualization service isn't responding."
Verify all system-level virtualization is working:

Get-VMHost returns valid host information
Get-Service vmms shows Running
Get-Service CoworkVMService shows Running
bcdedit /enum shows hypervisorlaunchtype: Auto
Virtual Machine Platform, Hyper-V and Windows Hypervisor Platform all enabled

Check cowork_vm_node.log and observe: HYPERVISOR_SERVICE_ERROR
Inspect AppxManifest.xml and confirm hypervisor capability is missing from the Capabilities section

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude Desktop v1.1617.0.0

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_