[BUG] Azure VIrtual Desktop Cowork Deployment

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?

We install Claude Cowork in a Azure Virtual Desktop with multisession support.
Installation works fine.
After Claude start ther is an Error:
Fehler beim Starten von Claudes Arbeitsbereich
HCS operation failed: failed to start VM: HcsWaitForOperationResult failed with HRESULT 0x80070001: {"Error":-2147024895,"ErrorMessage":"Unzulässige Funktion.","ErrorEvents":[{"Message":"Fehler beim Starten von \"cowork-vm-179ab640\" (ID des virtuellen Computers 38BF2E35-6805-531A-BE56-63CCEEF9FB04).","Provider":"51ddfa29-d5c8-4803-be4b-2ecb715570fe","EventId":12030,"Flags":13,"Data":[{"Type":"String","Value":"cowork-vm-179ab640"},{"Type":"String","Value":"38BF2E35-6805-531A-BE56-63CCEEF9FB04"}]},{"Message":"\"cowork-vm-179ab640\": Fehler beim Initialisieren von Arbeitsspeicher: Unzulässige Funktion. (0x80070001) (ID des virtuellen Computers: 38BF2E35-6805-531A-BE56-63CCEEF9FB04).","Provider":"51ddfa29-d5c8-4803-be4b-2ecb715570fe","EventId":3050,"Flags":5,"Data":[{"Type":"String","Value":"cowork-vm-179ab640"},{"Type":"String","Value":"38BF2E35-6805-531A-BE56-63CCEEF9FB04"},{"Type":"String","Value":"%%2147942401"},{"Type":"String","Value":"0x80070001"}]}],"Attribution":[{"OperationFailure":{"Detail":"Start"}}]}
Ein Neustart von Claude oder deinem Computer behebt dies manchmal. Falls das Problem weiterhin besteht, kannst du den Workspace neu installieren.

After clicking "den Workspace neu installieren" it works for a few minutes, then again the same error.

What Should Happen?

No Error Popup

Error Messages/Logs

Fehler beim Starten von Claudes Arbeitsbereich
HCS operation failed: failed to start VM: HcsWaitForOperationResult failed with HRESULT 0x80070001: {"Error":-2147024895,"ErrorMessage":"Unzulässige Funktion.","ErrorEvents":[{"Message":"Fehler beim Starten von \"cowork-vm-179ab640\" (ID des virtuellen Computers 38BF2E35-6805-531A-BE56-63CCEEF9FB04).","Provider":"51ddfa29-d5c8-4803-be4b-2ecb715570fe","EventId":12030,"Flags":13,"Data":[{"Type":"String","Value":"cowork-vm-179ab640"},{"Type":"String","Value":"38BF2E35-6805-531A-BE56-63CCEEF9FB04"}]},{"Message":"\"cowork-vm-179ab640\": Fehler beim Initialisieren von Arbeitsspeicher: Unzulässige Funktion. (0x80070001) (ID des virtuellen Computers: 38BF2E35-6805-531A-BE56-63CCEEF9FB04).","Provider":"51ddfa29-d5c8-4803-be4b-2ecb715570fe","EventId":3050,"Flags":5,"Data":[{"Type":"String","Value":"cowork-vm-179ab640"},{"Type":"String","Value":"38BF2E35-6805-531A-BE56-63CCEEF9FB04"},{"Type":"String","Value":"%%2147942401"},{"Type":"String","Value":"0x80070001"}]}],"Attribution":[{"OperationFailure":{"Detail":"Start"}}]}
Ein Neustart von Claude oder deinem Computer behebt dies manchmal. Falls das Problem weiterhin besteht, kannst du den Workspace neu installieren.

Steps to Reproduce

Deploy Azure Virtual Desktop
Connect via App or Remote Desktop
Install Claude
Start Claude
Wait oder work with claude cowork

<img width="1198" height="797" alt="Image" src="https://github.com/user-attachments/assets/ac96a8ed-27cf-4b39-a68d-146e419a8dda" />

Claude Model

Sonnet (default)

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

1.8555.2

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_