Win 10 issues
Common problem is the app style programs simply not starting. Including Anti-malware update, Windows update and PC Settings! Since the last time you shut down!
MS official Solutions:
1: Use Admin command line to add a new admin user (because they removed creating new local users from control panel). Try whatever didn't start as new user.
2: Use Power shell to reinstall all apps
3: Reinstall all your apps from the Store (won't fix other users).
4: Recommended solution: Download the win10 ISO and do a complete restore. It should let you keep your data.