When a modern application does not load (does not run) or ignores your order to close, you may simply need to re-register it Windows to fix the problem.
Today we will show you how to re-register all modern apps that you already have installed in one account user on Windows 8 or Windows 10.
1. Ανοίξτε το PowerShell. Για να το κάνετε αυτό πατήστε ταυτόχρονα τα 2 πλήκτρα Win + R και στο νέο παράθυρο "Εκτέλεση" που θα εμφανιστεί γράψτε Powershell.exe και πατήστε το πλήκτρο ΟΚ.
This command will run Windows Powershell, that is, it will open a new dark window blue Colourwhich looks like the Command Prompt window.
If you want to know more about Windows Powershell click here. If you have not already installed it you can download from here.
The windowworld Powershell window
2. In PowerShell, copy and paste the following command, and press Enter. (See it below picture)
Get-AppXPackage | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$ ($ _. InstallLocation) \ AppXManifest.xml"}
3. When finished, close it PowerShell, and try resubmitting the problematic modern app.
Good luck