When the "Generic V3" error affects multiple apps, re-registering the entire UWP manifest via PowerShell is the most reliable fix.
Windows includes a built-in tool designed to find and fix problems with UWP apps automatically. Open via the Start menu. Navigate to Update & Security > Troubleshoot . Select Additional troubleshooters . Click Windows Store Apps and run the tool. Reset the App Package mfw10 fix repair uwp v3 generic
Copy and paste the following command: Get-AppXPackage -AllUsers | Foreach Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml" Press and wait for the process to complete. Ignore any red error text that appears during the process. Clear the Windows Store Cache When the "Generic V3" error affects multiple apps,