How to Fix Fix Error 0x80073D11 — Windows Package Registration Signature Invalid on Windows
Getting Windows error 0x80073D11? Package registration signature invalid? Store app digital signature verification failed? App package certificate expired? UWP app signature mismatch? Fix error code 0x80073D11.
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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 0x80073D11
- •App package signature verification fails during install
- •Sideloaded app rejected due to invalid signature
- •Store app update blocked by certificate error
- •Developer mode app deployment fails with signature error
- •App package shows untrusted publisher warning
Common Causes
- ⚠App package signing certificate expired or revoked
- ⚠System date/time incorrect causing certificate validation failure
- ⚠Root certificate store missing required certificates
- ⚠Developer mode not enabled for sideloaded apps
- ⚠Package integrity tampered or download corrupted
- ⚠Certificate trust chain incomplete on system
Solutions
Solution 1: Fix System Time and Certificate Store
- 1Verify system date and time are correct:
- 2Settings → Time & Language → Date & time
- 3Enable "Set time automatically"
- 4Click "Sync now"
- 5Incorrect time causes all certificate validation to fail
- 6Update root certificates:
- 7CMD as Admin:
- 8certutil -generateSSTFromWU roots.sst
- 9certutil -addstore -f root roots.sst
- 10del roots.sst
- 11Restart PC and retry installation
Solution 2: Enable Developer Mode for Sideloading
- 1If sideloading apps:
- 2Settings → System → For developers
- 3Toggle "Developer Mode" on
- 4Confirm the warning prompt
- 5For specific package trust:
- 6Right-click the .appx or .msix file → Properties
- 7Digital Signatures tab → check if certificate is valid
- 8If expired: contact the developer for updated package
- 9Install certificate manually:
- 10Double-click the .cer file → Install Certificate
- 11Place in "Trusted People" store
Solution 3: Reset Store and Repair System
- 1Reset Microsoft Store:
- 2Win+R → wsreset.exe
- 3Settings → Apps → Microsoft Store → Advanced options → Reset
- 4Re-register Store apps:
- 5PowerShell as Admin:
- 6Get-AppxPackage -AllUsers | Foreach {Add-AppxPackage -Register "$($_.InstallLocation)\AppxManifest.xml" -DisableDevelopmentMode}
- 7Repair system files:
- 8CMD as Admin:
- 9sfc /scannow
- 10DISM /Online /Cleanup-Image /RestoreHealth
- 11Restart PC
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