How to Fix Fix Microsoft Store Error 0x80073CF9 — App Install Failed on Windows
Microsoft Store app installation failing with error 0x80073CF9? Can't install or update Store apps? Fix this Store error on Windows 10 and 11.
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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 shows error 0x80073CF9 when installing apps
- •App updates fail with this error code
- •Store downloads start but fail during installation
- •Error appears for specific apps or all Store apps
- •Previously working apps fail to reinstall after removal
Common Causes
- ⚠Microsoft Store cache corrupted
- ⚠Windows Update components damaged
- ⚠Insufficient disk space for app installation
- ⚠App data folder permissions incorrect
- ⚠WindowsApps folder corrupted or inaccessible
- ⚠Antivirus blocking Store app installation
Solutions
Solution 1: Reset Microsoft Store Cache
- 1Win+R → wsreset.exe → press Enter
- 2Wait for Store to open (cache is being cleared)
- 3Try installing the app again
- 4If that fails: Settings → Apps → Microsoft Store → Advanced options → Reset
- 5This clears all Store data and cache
Solution 2: Fix App Installation Folder
- 1Check that WindowsApps folder exists and has correct permissions:
- 2Navigate to C:\Program Files\WindowsApps (hidden folder)
- 3If you can't access it: that's normal — Windows protects this folder
- 4PowerShell as Administrator:
- 5Get-AppxPackage -AllUsers | ForEach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppxManifest.xml"}
- 6This re-registers all Store apps and can fix permission issues
Solution 3: Repair Windows Store Components
- 1PowerShell as Administrator:
- 2Get-AppxPackage *WindowsStore* | Remove-AppxPackage
- 3Then reinstall: Get-AppxPackage -AllUsers *WindowsStore* | ForEach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppxManifest.xml"}
- 4Also run: DISM /Online /Cleanup-Image /RestoreHealth
- 5Then: sfc /scannow
- 6Restart and try again
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