I hope there is no answer like this to let me reinstall:
In the administrator: Windows PowerShell window that opens, enter the following command:
get-appxpackage store | remove-Appxpackage
Reinstall:
add-appxpackage -register "C:\Program Files\WindowsApps*Store*\AppxManifest.xml" -disabledevelopmentmode
I haven't even installed it yet. Don't let me reinstall it.