


You try your luck by opening the command prompt as admin, and type and excute sfc /scanow to do a system file repair. If that still doesn't work, then Windows is damaged. You can delete the old account once done. If everything works, then it is simpler for you, to move your father data account from the old account to the new one, and set everything up. This may take several minuted so be patient. If you open the Start Menu, you should not see any down arrow icon. Set it as Admin, login to it, and wait until the account is complete generated.

If that doesn't work, Open PowerShell as administrator, and try and register the apps. Go to the security tab and make sure that ALL APPLICATION PACKAGES is there, and has at least read control. If that doesn't help, open: regedit.exe (search for it with Windows 10 start menu search or Win+R and type in the file name mentioned), onthe left column, right-click on each folder root (HKEY_CLASSES_ROUTE, HKEY_LOCAL_MACHINE, HKEY_CURRENT_USER, etc) item, and select properties. Go to the Security Tab, and add, if it is missing,k with full right: ALL APPLICATION PACKAGES. If that doesn't help, go to C:\Users\AppData\Local\, right-click on "Packages" and select Properties. If that doesn't help, not even an uninstall, restart and re-install: Run the Windows App Troubleshooter: (Start > Settings (gear icon) > Update & Security > Troubleshoot > Windows Store App, and follow the wizard. Ensure that you have the latest graphics card drivers from the chip manufacture (Nvidia, AMD, or Intel).
