If you plan on using the Windows 10 Calculator, here are a few things to keep in mind.
If your local or network account has been added to the Administrator group, the Windows 10 Calculator will not be available to you if the User Access Control is not on the “Never Notify” setting in the Control Panel. You will need to use an account without administrator privileges or place the UAC back on the default setting.
User Access Control
If the User Access Control is not on the default setting in the Control Panel, you may find out that the Windows 10 Calculator (along with the other windows 10 apps) will refuse to load. The setting could have been changed by someone who shares the system or by the Global Policy set by your job or educational institution. If the computer belongs to an educational institution, please note that the internal drive may be protected by software (SmartShield by Centurion Technologies) that erases all changes after a restart.