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claude-code - 💡(How to fix) Fix [BUG] Cowork and WSL both fail on Windows 11 ARM64 (Snapdragon X Plus 8-core) — VHDX creation blocked at OS level [1 comments, 2 participants]

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anthropics/claude-code#46389•Fetched 2026-04-11 06:21:34
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Error Message

Device: Snapdragon X Plus 8-core OS: Windows 11 Claude Desktop version: 1.1617.0.0 arm64 Install method: Direct download from claude.ai (not Microsoft Store) Error message: Failed to start Claude's workspace — failed to set session disk path: session disk not found: sessiondata.vhdx What I tried:

Manually created sessiondata.vhdx via PowerShell (New-VHD and diskpart both fail with "virtual disk support provider not found") Copied full bundle to both AppData\Roaming and AppData\Local\Packages paths Manually started CoworkVMService — starts but Claude Desktop kills it during configure step WSL install fails with same error: 0xc03a0014 A virtual disk support provider for the specified file was not found VirtualMachinePlatform is Enabled Microsoft-Hyper-V-All is unavailable/unknown on this chip Memory Integrity toggle blocked in Windows Security

Root cause: VHDX creation is blocked at the OS level on Snapdragon X Plus. Neither Cowork nor WSL can initialize because no virtual disk can be created by any method. Related issues: #45549, #40198, #24974

Root Cause

Root cause: VHDX creation is blocked at the OS level on Snapdragon X Plus. Neither Cowork nor WSL can initialize because no virtual disk can be created by any method. Related issues: #45549, #40198, #24974

Code Example

Device: Snapdragon X Plus 8-core
OS: Windows 11
Claude Desktop version: 1.1617.0.0 arm64
Install method: Direct download from claude.ai (not Microsoft Store)
Error message:
Failed to start Claude's workspace — failed to set session disk path: session disk not found: sessiondata.vhdx
What I tried:

Manually created sessiondata.vhdx via PowerShell (New-VHD and diskpart both fail with "virtual disk support provider not found")
Copied full bundle to both AppData\Roaming and AppData\Local\Packages paths
Manually started CoworkVMService — starts but Claude Desktop kills it during configure step
WSL install fails with same error: 0xc03a0014 A virtual disk support provider for the specified file was not found
VirtualMachinePlatform is Enabled
Microsoft-Hyper-V-All is unavailable/unknown on this chip
Memory Integrity toggle blocked in Windows Security

Root cause: VHDX creation is blocked at the OS level on Snapdragon X Plus. Neither Cowork nor WSL can initialize because no virtual disk can be created by any method.
Related issues: #45549, #40198, #24974
RAW_BUFFERClick to expand / collapse

Preflight Checklist

  • I have searched existing issues and this hasn't been reported yet
  • This is a single bug report (please file separate reports for different bugs)
  • I am using the latest version of Claude Code

What's Wrong?

Device: Snapdragon X Plus 8-core OS: Windows 11 Claude Desktop version: 1.1617.0.0 arm64 Install method: Direct download from claude.ai (not Microsoft Store) Error message: Failed to start Claude's workspace — failed to set session disk path: session disk not found: sessiondata.vhdx What I tried:

Manually created sessiondata.vhdx via PowerShell (New-VHD and diskpart both fail with "virtual disk support provider not found") Copied full bundle to both AppData\Roaming and AppData\Local\Packages paths Manually started CoworkVMService — starts but Claude Desktop kills it during configure step WSL install fails with same error: 0xc03a0014 A virtual disk support provider for the specified file was not found VirtualMachinePlatform is Enabled Microsoft-Hyper-V-All is unavailable/unknown on this chip Memory Integrity toggle blocked in Windows Security

Root cause: VHDX creation is blocked at the OS level on Snapdragon X Plus. Neither Cowork nor WSL can initialize because no virtual disk can be created by any method. Related issues: #45549, #40198, #24974

What Should Happen?

Device: Snapdragon X Plus 8-core OS: Windows 11 Claude Desktop version: 1.1617.0.0 arm64 Install method: Direct download from claude.ai (not Microsoft Store) Error message: Failed to start Claude's workspace — failed to set session disk path: session disk not found: sessiondata.vhdx What I tried:

Manually created sessiondata.vhdx via PowerShell (New-VHD and diskpart both fail with "virtual disk support provider not found") Copied full bundle to both AppData\Roaming and AppData\Local\Packages paths Manually started CoworkVMService — starts but Claude Desktop kills it during configure step WSL install fails with same error: 0xc03a0014 A virtual disk support provider for the specified file was not found VirtualMachinePlatform is Enabled Microsoft-Hyper-V-All is unavailable/unknown on this chip Memory Integrity toggle blocked in Windows Security

Root cause: VHDX creation is blocked at the OS level on Snapdragon X Plus. Neither Cowork nor WSL can initialize because no virtual disk can be created by any method. Related issues: #45549, #40198, #24974

Error Messages/Logs

Device: Snapdragon X Plus 8-core
OS: Windows 11
Claude Desktop version: 1.1617.0.0 arm64
Install method: Direct download from claude.ai (not Microsoft Store)
Error message:
Failed to start Claude's workspace — failed to set session disk path: session disk not found: sessiondata.vhdx
What I tried:

Manually created sessiondata.vhdx via PowerShell (New-VHD and diskpart both fail with "virtual disk support provider not found")
Copied full bundle to both AppData\Roaming and AppData\Local\Packages paths
Manually started CoworkVMService — starts but Claude Desktop kills it during configure step
WSL install fails with same error: 0xc03a0014 A virtual disk support provider for the specified file was not found
VirtualMachinePlatform is Enabled
Microsoft-Hyper-V-All is unavailable/unknown on this chip
Memory Integrity toggle blocked in Windows Security

Root cause: VHDX creation is blocked at the OS level on Snapdragon X Plus. Neither Cowork nor WSL can initialize because no virtual disk can be created by any method.
Related issues: #45549, #40198, #24974

Steps to Reproduce

Device: Snapdragon X Plus 8-core OS: Windows 11 Claude Desktop version: 1.1617.0.0 arm64 Install method: Direct download from claude.ai (not Microsoft Store) Error message: Failed to start Claude's workspace — failed to set session disk path: session disk not found: sessiondata.vhdx What I tried:

Manually created sessiondata.vhdx via PowerShell (New-VHD and diskpart both fail with "virtual disk support provider not found") Copied full bundle to both AppData\Roaming and AppData\Local\Packages paths Manually started CoworkVMService — starts but Claude Desktop kills it during configure step WSL install fails with same error: 0xc03a0014 A virtual disk support provider for the specified file was not found VirtualMachinePlatform is Enabled Microsoft-Hyper-V-All is unavailable/unknown on this chip Memory Integrity toggle blocked in Windows Security

Root cause: VHDX creation is blocked at the OS level on Snapdragon X Plus. Neither Cowork nor WSL can initialize because no virtual disk can be created by any method. Related issues: #45549, #40198, #24974

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

latest version

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

No response

extent analysis

TL;DR

The issue is likely due to VHDX creation being blocked at the OS level on Snapdragon X Plus, and a workaround may involve using a different virtualization method or waiting for an update that addresses this compatibility issue.

Guidance

  • The root cause of the issue is related to the Snapdragon X Plus chip not supporting virtual disk creation, which is required by Claude Desktop and WSL.
  • Try checking for updates to Windows 11 or Claude Desktop that may address this compatibility issue.
  • Consider using a different device or virtualization platform that supports VHDX creation.
  • Review related issues #45549, #40198, and #24974 for potential workarounds or fixes.

Example

No code snippet is provided as the issue is related to hardware and software compatibility.

Notes

The issue is specific to the Snapdragon X Plus chip and Windows 11, and may not be reproducible on other devices or platforms.

Recommendation

Apply workaround: Wait for an update that addresses the VHDX creation issue on Snapdragon X Plus or consider using a different device or virtualization platform.

FAIL-SAFE: Given the information provided, it's clear that the issue is related to hardware and software compatibility, and a workaround or update is needed to resolve the issue.

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