I have been having an annoying problem with Windows Store apps. Every day or so some vanish along with their tiles and all apps listing, usually about half a dozen at a time..If I can remember which one(s) have gone missing I re-install them from the Store, again and again. What can make it worse is that any user data is frequently lost too so that Reminders, ToDos,, Notes etc. have to be re-installed, only to disappear yet again a few days later. I am sometimes helped with this if the data has been synced to my phone. In some cases I only find the app is missing when I try to use it, typically via 'Open with'.

This is getting very annoying. Suggestions as to what might cure it would be appreciated.