Only manually check for updates and before doing a native app update create a system restore point so you can much more easily reverse the process should another app update break functionality for yourself or other user accounts. Once your up and running be sure to go into Store and turn off automatic updating of apps to avoid this problem again. This is a pain but once logged into it you can easily re-download your apps again via Store. If there are documents/pics you need to keep under your current user then be sure to choose keep files when deleting your user account so they can be copies over after. The only options are to either use system restore and restore to a point when you know they worked (if you have it active and can remember) or else delete your existing user account and then create a new user account for yourself. Powershell fix is not to be trusted as it can make things much worse. And because they are native apps there is no easy way of uninstalling and reinstalling them. The app might then update successfully and whilst it will continue to work for that user there is a good chance it will break for other users not logged on at the moment. Usually what triggers it is, a native app gets updated but on rare occasions it fails and then re-attempts. I have found in the past native apps stop working in various user accounts. This is typical behaviour of Windows 10 and multi user accounts.