claude-code - 💡(How to fix) Fix [BUG] Claude Desktop crashes immediately on startup after recent update — Windows 10, no logs generated [1 comments, 2 participants]

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anthropics/claude-code#48367Fetched 2026-04-16 07:02:12
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Error Message

ClaudeSetup.log key entries:

  • WARNING: CoworkVMService already exists (potential conflict)
  • WARNING: failed to remove conflicting service: could not open CoworkVMService: Access is denied.
  • WARNING: Remove failed for Claude_1.2581.0.0_x64__pzs8sxrjxfjjc: RemovePackage failed with HRESULT 0x80073CFA
  • MSIX installation failed: AddPackage failed with HRESULT 0x80073CF6
  • ERROR: Administrator access is required to install Claude with full features. You can try again or install without Cowork. (no "install without Cowork" button visible — only OK)

Code Example

ClaudeSetup.log key entries:
- WARNING: CoworkVMService already exists (potential conflict)
- WARNING: failed to remove conflicting service: could not open CoworkVMService: Access is denied.
- WARNING: Remove failed for Claude_1.2581.0.0_x64__pzs8sxrjxfjjc: RemovePackage failed with HRESULT 0x80073CFA
- MSIX installation failed: AddPackage failed with HRESULT 0x80073CF6
- ERROR: Administrator access is required to install Claude with full features. You can try again or install without Cowork. (no "install without Cowork" button visible — only OK)
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?

Claude Desktop crashes immediately on startup after a recent update that changed the UI layout. No window is ever displayed and no logs are generated.

What Should Happen?

Claude Desktop should launch and display the main window after installation. No crushing

Error Messages/Logs

ClaudeSetup.log key entries:
- WARNING: CoworkVMService already exists (potential conflict)
- WARNING: failed to remove conflicting service: could not open CoworkVMService: Access is denied.
- WARNING: Remove failed for Claude_1.2581.0.0_x64__pzs8sxrjxfjjc: RemovePackage failed with HRESULT 0x80073CFA
- MSIX installation failed: AddPackage failed with HRESULT 0x80073CF6
- ERROR: Administrator access is required to install Claude with full features. You can try again or install without Cowork. (no "install without Cowork" button visible — only OK)

Steps to Reproduce

  1. Download Claude Setup.exe from claude.ai/download
  2. Run installer — completes with exit code 0 (success)
  3. Claude Desktop launches via explorer.exe shell:AppsFolder\Claude_pzs8sxrjxfjjc!Claude
  4. App crashes immediately — no window renders, no logs written

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

2.1.92

Platform

Other

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

Troubleshooting performed:

  • Uninstalled and reinstalled Claude Desktop multiple times
  • Get-AppxPackage Claude | Remove-AppxPackage
  • Get-AppxProvisionedPackage removed
  • sc.exe stop/delete CoworkVMService (service not found)
  • Cleared all app data folders
  • Event Viewer — no Claude entries
  • %LOCALAPPDATA%\Packages\Claude_pzs8sxrjxfjjc\LocalCache\Roaming\Claude\logs\ — folder does not exist, app crashes before writing any logs
  • Get-WinEvent Event ID 1000 — no Claude entries
  • Multiple reboots between attempts

extent analysis

TL;DR

  • The most likely fix involves resolving the conflict with the CoworkVMService and ensuring proper installation with administrator access.

Guidance

  • Investigate the warnings in the ClaudeSetup.log, particularly the "CoworkVMService already exists" and "Access is denied" errors, to understand the root cause of the conflict.
  • Try running the installer with administrator privileges to ensure that the installation can complete without access denied errors.
  • Consider manually removing any remnants of the CoworkVMService or previous installations that might be causing conflicts.
  • Verify that the installation completes successfully without any warnings or errors related to access or service removal.

Example

  • No specific code snippet is applicable in this case, as the issue seems related to installation and service conflicts rather than code-level problems.

Notes

  • The lack of logs from the application itself due to the immediate crash limits the ability to diagnose the issue further.
  • The fact that this is a regression and worked in a previous version suggests that changes in the recent update might be the cause of the problem.

Recommendation

  • Apply workaround: Run the installer with administrator privileges and manually resolve any service conflicts to ensure a clean installation. This approach is recommended because it directly addresses the access denied errors and service conflicts indicated in the log warnings.

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