Not knowing that this is a bad mistake — or maybe a massive bug in Windows 8 — I shared my complete user folder using Home Group on Windows 8 Pro x64. This changed the permissions for
C:\Users\<username>\AppData and as a consequence of that, all Windows 8 apps failed. If I try to start one of them now, the full-screen app icon shows up for a couple of seconds followed by a force-close of the app.
I did some research and found that my sharing of the user folder apparently caused this problem. I also found that adding specific permissions for
ALL_APPLICATION_PACKAGES for the folder
C:\Users\<username>\AppData\Local\Microsoft\Windows\WER and a
.dat file in a "Temporary Internet Files" folder should fix it, but it didn't, just like issuing
As I'm really not too keen on reinstalling my machine, do you have any advice on how to fix the permissions problem to make the apps work again?