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claude-code - 💡(How to fix) Fix [BUG] Claude Desktop fails to launch on Windows 11 Home 25H2 (Build 26200) — CoworkVMService crashes before initialization

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Error Message

Claude Desktop fails to launch immediately with the error: "Claude Desktop failed to launch. Please check for updates and try again."

Error Messages/Logs

Error dialog: "Claude Desktop failed to launch. Please check for updates and try again."

Root Cause

Root Cause Analysis CoworkVMService requires Hyper-V and Windows Containers features which are unavailable on Windows 11 Home edition. This makes Claude Desktop completely non-functional for all Windows 11 Home users on 25H2 with no user-side workaround. Suggested Fix Implement a fallback chat-only mode that bypasses CoworkVMService when virtualization features are unavailable, similar to how the app should degrade gracefully on unsupported hardware. Related Issues #25914, #25829, #28231, #28304

Fix Action

Fix / Workaround

Root Cause Analysis CoworkVMService requires Hyper-V and Windows Containers features which are unavailable on Windows 11 Home edition. This makes Claude Desktop completely non-functional for all Windows 11 Home users on 25H2 with no user-side workaround. Suggested Fix Implement a fallback chat-only mode that bypasses CoworkVMService when virtualization features are unavailable, similar to how the app should degrade gracefully on unsupported hardware. Related Issues #25914, #25829, #28231, #28304

Code Example

Error dialog: "Claude Desktop failed to launch. Please check for updates and try again."
No crash logs generated in Windows Event Viewer — app fails before initialization.
.NET Runtime warning found: HRESULT 0x80004005, Message ID 0x2509 (unrelated noise)
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?

Preflight Checklist

I have searched existing issues and this hasn't been reported yet This is a single bug report

What's Wrong? Claude Desktop fails to launch immediately with the error: "Claude Desktop failed to launch. Please check for updates and try again." The app crashes so early that no entries are logged in Windows Event Viewer (Application logs) — confirming the failure occurs before any initialization completes. System Info

OS: Windows 11 Home Single Language, Version 25H2 (OS Build 26200.8037) Device: HP Claude Desktop: latest version (fresh install)

Troubleshooting Already Attempted

Cleared %LOCALAPPDATA%\Claude and Claude_pzs8sxrjxfjjc package folder Full uninstall + clean reinstall Installed Windows App Runtime 1.6 manually Enabled Virtual Machine Platform and Windows Hypervisor Platform Enabled Developer Mode Ran installer as Administrator Checked Event Viewer — zero Claude/Cowork entries on launch

Root Cause Analysis CoworkVMService requires Hyper-V and Windows Containers features which are unavailable on Windows 11 Home edition. This makes Claude Desktop completely non-functional for all Windows 11 Home users on 25H2 with no user-side workaround. Suggested Fix Implement a fallback chat-only mode that bypasses CoworkVMService when virtualization features are unavailable, similar to how the app should degrade gracefully on unsupported hardware. Related Issues #25914, #25829, #28231, #28304

What Should Happen?

Claude should launch and work on desktop

Error Messages/Logs

Error dialog: "Claude Desktop failed to launch. Please check for updates and try again."
No crash logs generated in Windows Event Viewer — app fails before initialization.
.NET Runtime warning found: HRESULT 0x80004005, Message ID 0x2509 (unrelated noise)

Steps to Reproduce

  1. open claude desktop

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

No response

Claude Code Version

1.2278.0.0

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

No response

extent analysis

TL;DR

Implement a fallback mode that bypasses CoworkVMService when Hyper-V and Windows Containers features are unavailable on Windows 11 Home edition.

Guidance

  • The issue is likely caused by the unavailability of Hyper-V and Windows Containers features on Windows 11 Home edition, which are required by CoworkVMService.
  • To verify, check if the features are enabled in Windows Settings: Turn Windows features on or off.
  • Consider implementing a fallback chat-only mode that degrades gracefully when virtualization features are unavailable.
  • Review related issues #25914, #25829, #28231, #28304 for potential insights into similar problems.

Example

No code snippet is provided as the issue does not imply a specific code change.

Notes

The suggested fix requires changes to the application's architecture to handle the absence of required features on certain Windows editions.

Recommendation

Apply workaround: Implement a fallback mode that bypasses CoworkVMService when necessary, as this is a more feasible solution given the constraints of Windows 11 Home edition.

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#api#cache error#pipeline error#runtime error#dependency conflict

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claude-code - 💡(How to fix) Fix [BUG] Claude Desktop fails to launch on Windows 11 Home 25H2 (Build 26200) — CoworkVMService crashes before initialization