claude-code - 💡(How to fix) Fix [BUG] Claude Desktop Windows installation permanently broken – MSIX stuck in Staged state [2 comments, 2 participants]

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anthropics/claude-code#47877Fetched 2026-04-15 06:39:46
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Error Message

Error Messages/Logs

Error Messages: 2026/04/14 12:39:33.719326 ERROR dialog (opening log): Installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073D28 2026/04/14 12:39:35.097483 ERROR dialog (with log path): Administrator access is required to install Claude with full features. You can try again or install without Cowork.

Code Example

Error Messages:
HRESULT 0x80073CFA: Cannot remove existing package
HRESULT 0x80073D28: Administrator privileges required to install packaged service

Logs:
2026/04/14 12:39:27.795243 === Claude Setup started ===
2026/04/14 12:39:27.795243 AllowAllTrustedApps not found (sideloading assumed enabled): A rendszer nem találja a megadott fájlt.
2026/04/14 12:39:27.795764 Windows edition: Professional
2026/04/14 12:39:27.795764 Windows version: 10.0.26200
2026/04/14 12:39:27.796277 Native arch: x64
2026/04/14 12:39:27.796277 Elevation type: Full
2026/04/14 12:39:27.796277 Is elevated: true
2026/04/14 12:39:27.796277 Sideloading enabled: true
2026/04/14 12:39:27.796277 S Mode: false
2026/04/14 12:39:27.796277 Conflicting service: false
2026/04/14 12:39:27.796277 Running in non-elevated context
2026/04/14 12:39:27.796277 User can elevate — installing MSIX directly
2026/04/14 12:39:27.814632 Splash: 400x300, 8 frame(s), animated=true
2026/04/14 12:39:27.815152 System DPI: 120 (scale: 125%)
2026/04/14 12:39:27.860170 MSIX URL: https://api.anthropic.com/api/desktop/win32/x64/msix/latest/redirect
2026/04/14 12:39:27.860690 Downloading MSIX to C:\Users\gabor\AppData\Local\Temp\Claude-2375424770.msix
2026/04/14 12:39:28.746015 Download progress: 10% (22101888 / 220972602 bytes)
2026/04/14 12:39:29.188831 Download progress: 20% (44220080 / 220972602 bytes)
2026/04/14 12:39:29.631075 Download progress: 30% (66305552 / 220972602 bytes)
2026/04/14 12:39:30.070421 Download progress: 40% (88391040 / 220972602 bytes)
2026/04/14 12:39:30.483507 Download progress: 50% (110492864 / 220972602 bytes)
2026/04/14 12:39:30.890695 Download progress: 60% (132594704 / 220972602 bytes)
2026/04/14 12:39:31.296860 Download progress: 70% (154712944 / 220972602 bytes)
2026/04/14 12:39:31.691774 Download progress: 80% (176798400 / 220972602 bytes)
2026/04/14 12:39:32.083608 Download progress: 90% (198900256 / 220972602 bytes)
2026/04/14 12:39:32.557325 Download progress: 100% (220972602 / 220972602 bytes)
2026/04/14 12:39:32.558344 Download complete: 220972602 bytes, SHA256: ddde1cd131548415d885ce97b96a29a3e17f17e35663b2512f8ceb161c12925b
2026/04/14 12:39:32.559524 Download complete
2026/04/14 12:39:32.571228 Self-elevating: C:\Users\gabor\Downloads\Claude Setup (7).exe --elevated --msix-path "C:\Users\gabor\AppData\Local\Temp\Claude-2375424770.msix" --log-path "C:\Users\gabor\AppData\Local\Temp\ClaudeSetup.log"
2026/04/14 12:39:32.623141 Waiting for elevated process to complete...
2026/04/14 12:39:32.629047 Log file: C:\Users\gabor\AppData\Local\Temp\ClaudeSetup.log
2026/04/14 12:39:32.633665 === Claude Setup started ===
2026/04/14 12:39:32.634171 AllowAllTrustedApps not found (sideloading assumed enabled): A rendszer nem találja a megadott fájlt.
2026/04/14 12:39:32.634171 Windows edition: Professional
2026/04/14 12:39:32.634717 Windows version: 10.0.26200
2026/04/14 12:39:32.634717 Native arch: x64
2026/04/14 12:39:32.634717 Elevation type: Full
2026/04/14 12:39:32.634717 Is elevated: true
2026/04/14 12:39:32.634717 Sideloading enabled: true
2026/04/14 12:39:32.634717 S Mode: false
2026/04/14 12:39:32.634717 Conflicting service: false
2026/04/14 12:39:32.634717 Running in elevated context
2026/04/14 12:39:32.634717 Installing MSIX from C:\Users\gabor\AppData\Local\Temp\Claude-2375424770.msix (all-users: false)
2026/04/14 12:39:32.651180 Splash: 400x300, 8 frame(s), animated=true
2026/04/14 12:39:32.651180 System DPI: 120 (scale: 125%)
2026/04/14 12:39:32.682574 Verifying Authenticode signature on C:\Users\gabor\AppData\Local\Temp\Claude-2375424770.msix
2026/04/14 12:39:33.196627 WinVerifyTrust: MSIX signature is valid
2026/04/14 12:39:33.413422 Signature verified: MSIX signer matches bootstrapper
2026/04/14 12:39:33.413422 Squirrel process prefix: c:\users\gabor\appdata\local\anthropicclaude\
2026/04/14 12:39:33.414965 Checking for running Squirrel Claude processes...
2026/04/14 12:39:33.420102 No Squirrel Claude processes found
2026/04/14 12:39:33.420102 Checking for existing Claude MSIX packages...
2026/04/14 12:39:33.434865 Removing (user): Claude_1.2278.0.0_x64__pzs8sxrjxfjjc
2026/04/14 12:39:33.452690 WARNING: Remove failed for Claude_1.2278.0.0_x64__pzs8sxrjxfjjc: RemovePackage failed with HRESULT 0x80073CFA
2026/04/14 12:39:33.452690 Installing MSIX: C:\Users\gabor\AppData\Local\Temp\Claude-2375424770.msix
2026/04/14 12:39:33.454200 Extracted family name from MSIX manifest: Claude_pzs8sxrjxfjjc
2026/04/14 12:39:33.454200 Standard install (not split-account), using AddPackage
2026/04/14 12:39:33.454200 Installing via AddPackage (current-user)...
2026/04/14 12:39:33.719326 MSIX installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073D28
2026/04/14 12:39:33.719326 ERROR dialog (opening log): Installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073D28

Please share this log with us.
2026/04/14 12:39:35.097483 Elevated process exited with code 1
2026/04/14 12:39:35.097483 Elevation failed: elevated installer exited with code 1
2026/04/14 12:39:35.097483 ERROR dialog (with log path): Administrator access is required to install Claude with full features. You can try again or install without Cowork.
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 installation fails with MSIX package corruption. Package Claude_1.2278.0.0_x64__pzs8sxrjxfjjc is stuck in "Staged" state and cannot be removed or reinstalled.

What Should Happen?

Claude Desktop should install/reinstall normally without MSIX package conflicts.

Error Messages/Logs

Error Messages:
HRESULT 0x80073CFA: Cannot remove existing package
HRESULT 0x80073D28: Administrator privileges required to install packaged service

Logs:
2026/04/14 12:39:27.795243 === Claude Setup started ===
2026/04/14 12:39:27.795243 AllowAllTrustedApps not found (sideloading assumed enabled): A rendszer nem találja a megadott fájlt.
2026/04/14 12:39:27.795764 Windows edition: Professional
2026/04/14 12:39:27.795764 Windows version: 10.0.26200
2026/04/14 12:39:27.796277 Native arch: x64
2026/04/14 12:39:27.796277 Elevation type: Full
2026/04/14 12:39:27.796277 Is elevated: true
2026/04/14 12:39:27.796277 Sideloading enabled: true
2026/04/14 12:39:27.796277 S Mode: false
2026/04/14 12:39:27.796277 Conflicting service: false
2026/04/14 12:39:27.796277 Running in non-elevated context
2026/04/14 12:39:27.796277 User can elevate — installing MSIX directly
2026/04/14 12:39:27.814632 Splash: 400x300, 8 frame(s), animated=true
2026/04/14 12:39:27.815152 System DPI: 120 (scale: 125%)
2026/04/14 12:39:27.860170 MSIX URL: https://api.anthropic.com/api/desktop/win32/x64/msix/latest/redirect
2026/04/14 12:39:27.860690 Downloading MSIX to C:\Users\gabor\AppData\Local\Temp\Claude-2375424770.msix
2026/04/14 12:39:28.746015 Download progress: 10% (22101888 / 220972602 bytes)
2026/04/14 12:39:29.188831 Download progress: 20% (44220080 / 220972602 bytes)
2026/04/14 12:39:29.631075 Download progress: 30% (66305552 / 220972602 bytes)
2026/04/14 12:39:30.070421 Download progress: 40% (88391040 / 220972602 bytes)
2026/04/14 12:39:30.483507 Download progress: 50% (110492864 / 220972602 bytes)
2026/04/14 12:39:30.890695 Download progress: 60% (132594704 / 220972602 bytes)
2026/04/14 12:39:31.296860 Download progress: 70% (154712944 / 220972602 bytes)
2026/04/14 12:39:31.691774 Download progress: 80% (176798400 / 220972602 bytes)
2026/04/14 12:39:32.083608 Download progress: 90% (198900256 / 220972602 bytes)
2026/04/14 12:39:32.557325 Download progress: 100% (220972602 / 220972602 bytes)
2026/04/14 12:39:32.558344 Download complete: 220972602 bytes, SHA256: ddde1cd131548415d885ce97b96a29a3e17f17e35663b2512f8ceb161c12925b
2026/04/14 12:39:32.559524 Download complete
2026/04/14 12:39:32.571228 Self-elevating: C:\Users\gabor\Downloads\Claude Setup (7).exe --elevated --msix-path "C:\Users\gabor\AppData\Local\Temp\Claude-2375424770.msix" --log-path "C:\Users\gabor\AppData\Local\Temp\ClaudeSetup.log"
2026/04/14 12:39:32.623141 Waiting for elevated process to complete...
2026/04/14 12:39:32.629047 Log file: C:\Users\gabor\AppData\Local\Temp\ClaudeSetup.log
2026/04/14 12:39:32.633665 === Claude Setup started ===
2026/04/14 12:39:32.634171 AllowAllTrustedApps not found (sideloading assumed enabled): A rendszer nem találja a megadott fájlt.
2026/04/14 12:39:32.634171 Windows edition: Professional
2026/04/14 12:39:32.634717 Windows version: 10.0.26200
2026/04/14 12:39:32.634717 Native arch: x64
2026/04/14 12:39:32.634717 Elevation type: Full
2026/04/14 12:39:32.634717 Is elevated: true
2026/04/14 12:39:32.634717 Sideloading enabled: true
2026/04/14 12:39:32.634717 S Mode: false
2026/04/14 12:39:32.634717 Conflicting service: false
2026/04/14 12:39:32.634717 Running in elevated context
2026/04/14 12:39:32.634717 Installing MSIX from C:\Users\gabor\AppData\Local\Temp\Claude-2375424770.msix (all-users: false)
2026/04/14 12:39:32.651180 Splash: 400x300, 8 frame(s), animated=true
2026/04/14 12:39:32.651180 System DPI: 120 (scale: 125%)
2026/04/14 12:39:32.682574 Verifying Authenticode signature on C:\Users\gabor\AppData\Local\Temp\Claude-2375424770.msix
2026/04/14 12:39:33.196627 WinVerifyTrust: MSIX signature is valid
2026/04/14 12:39:33.413422 Signature verified: MSIX signer matches bootstrapper
2026/04/14 12:39:33.413422 Squirrel process prefix: c:\users\gabor\appdata\local\anthropicclaude\
2026/04/14 12:39:33.414965 Checking for running Squirrel Claude processes...
2026/04/14 12:39:33.420102 No Squirrel Claude processes found
2026/04/14 12:39:33.420102 Checking for existing Claude MSIX packages...
2026/04/14 12:39:33.434865 Removing (user): Claude_1.2278.0.0_x64__pzs8sxrjxfjjc
2026/04/14 12:39:33.452690 WARNING: Remove failed for Claude_1.2278.0.0_x64__pzs8sxrjxfjjc: RemovePackage failed with HRESULT 0x80073CFA
2026/04/14 12:39:33.452690 Installing MSIX: C:\Users\gabor\AppData\Local\Temp\Claude-2375424770.msix
2026/04/14 12:39:33.454200 Extracted family name from MSIX manifest: Claude_pzs8sxrjxfjjc
2026/04/14 12:39:33.454200 Standard install (not split-account), using AddPackage
2026/04/14 12:39:33.454200 Installing via AddPackage (current-user)...
2026/04/14 12:39:33.719326 MSIX installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073D28
2026/04/14 12:39:33.719326 ERROR dialog (opening log): Installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073D28

Please share this log with us.
2026/04/14 12:39:35.097483 Elevated process exited with code 1
2026/04/14 12:39:35.097483 Elevation failed: elevated installer exited with code 1
2026/04/14 12:39:35.097483 ERROR dialog (with log path): Administrator access is required to install Claude with full features. You can try again or install without Cowork.

Steps to Reproduce

Windows 11 Pro Build 26200 with existing Claude Desktop 1.2278.0.0 Automatic update occurs Claude Desktop stops working Attempt reinstallation - fails with HRESULT 0x80073CFA (cannot remove) and 0x80073D28 (cannot install) Package remains visible in Get-AppxPackage -AllUsers with status "Staged" All standard removal methods fail (Remove-AppxPackage, DISM, registry cleanup, etc.)

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

Claude_1.2278.0.0_x64__pzs8sxrjxfjjc

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

No response

extent analysis

TL;DR

The issue can be resolved by manually removing the corrupted MSIX package using the Windows Package Manager or by using the Remove-AppxPackage cmdlet with the -AllUsers flag.

Guidance

  • The error messages HRESULT 0x80073CFA and HRESULT 0x80073D28 indicate that the package removal and installation are failing due to corruption or permission issues.
  • Try removing the package using the Windows Package Manager: winget uninstall Claude_1.2278.0.0_x64__pzs8sxrjxfjjc
  • Alternatively, use the Remove-AppxPackage cmdlet with the -AllUsers flag to remove the package: Remove-AppxPackage -AllUsers -Package Claude_1.2278.0.0_x64__pzs8sxrjxfjjc
  • If the above steps fail, try using the DISM tool to remove the package: DISM /online /remove-package /packagename:Claude_1.2278.0.0_x64__pzs8sxrjxfjjc
  • After removing the package, try reinstalling Claude Desktop to see if the issue is resolved.

Example

No code example is provided as the issue is related to package management and not code-specific.

Notes

The issue seems to be related to a corrupted MSIX package, and removing it manually should resolve the issue. However, if the issue persists, it may be worth investigating further to determine the root cause of the corruption.

Recommendation

Apply the workaround by manually removing the corrupted MSIX package using the Windows Package Manager or the Remove-AppxPackage cmdlet. This should allow for a successful reinstallation of Claude Desktop.

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