Calculator app will not open
Problem:
Windows app Calculator fails to open.
Then a blue dialog screen displays "blocked by administrator". The "blocked by administrator" shows due to going out to the Microsoft Store, this blocked by Group Policy.
Solution:
Back up the folder first from C:\Program files\Windows apps\%desired windowsapp % to Downloads folder for example.
Right click calculator app then select Uninstall
open Powershell ise. cmdlet is add-appxpackage -DisableDevelopmentMode -Register "C:\Program Files\WindowsApps\%windows app package x64"\AppxManifest.xml"
Please note, this procedure can be used for other windows apps that are reported.