How to Fix Fix Error 0x80073D0F — Store App Package Tampered on Windows
Getting error 0x80073D0F when installing Store apps? App package integrity check failed? Package has been tampered with? Store app signature verification failed? UWP app installation blocked by integrity error? Fix this Store app package tamper error.
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Main Troubleshooting Guide
How to Fix Microsoft Store Not Working →Complete symptoms, causes, and step-by-step solutions
Symptoms
You might be experiencing this problem if you notice:
- •Microsoft Store app installation fails with 0x80073D0F
- •Sideloaded app reports package integrity failure
- •App update fails with tamper detection error
- •PowerShell Add-AppxPackage shows signature verification error
- •Store shows package has been modified or corrupted
- •Downloaded app package fails integrity check on install
Common Causes
- ⚠App package was modified after signing
- ⚠Download corruption altered package contents
- ⚠Anti-virus modified or quarantined package files during download
- ⚠Third-party tool altered the MSIX/APPX package
- ⚠Certificate used to sign app has been revoked
- ⚠Windows integrity checking service misconfigured
Solutions
Solution 1: Re-download and Verify Package
- 1Clear the Microsoft Store cache:
- 2CMD as Admin: wsreset.exe
- 3Wait for Store to reopen
- 4Try installing the app again from Store
- 5If sideloading: re-download the .msix or .appx file
- 6Verify file hash matches the publishers hash
- 7Temporarily disable real-time antivirus protection
- 8Re-download and try installation again
- 9Re-enable protection after install
Solution 2: Fix Certificate and Signing Issues
- 1For sideloaded apps: install the signing certificate:
- 2Right-click .appx → Properties → Digital Signatures
- 3Select signature → Details → View Certificate → Install
- 4Install to "Local Machine" → "Trusted People" store
- 5Enable sideloading:
- 6Settings → Apps → Advanced app settings
- 7Enable "Install apps from any source"
- 8Or via Group Policy:
- 9gpedit.msc → Computer Configuration → Administrative Templates
- 10→ Windows Components → App Package Deployment
- 11"Allow all trusted apps to install" → Enabled
Solution 3: Reset Store and App Installer
- 1Reset the Microsoft Store:
- 2Settings → Apps → Microsoft Store → Advanced options → Reset
- 3Also reset App Installer:
- 4Settings → Apps → App Installer → Advanced options → Reset
- 5Re-register the Store:
- 6PowerShell as Admin:
- 7Get-AppxPackage -AllUsers Microsoft.WindowsStore | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
- 8For persistent integrity errors:
- 9sfc /scannow
- 10DISM /Online /Cleanup-Image /RestoreHealth
- 11Restart and retry installation
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