Windows 8.1 user here. My problem is the same as with every Windows OS since XP - compatibility mode. It doesn't work, has never worked and will never work. I like to play a lot of old games and my only option is a virtual PC. Which isn't all that bad, but it'd be nice if Microsoft finally acknowledged that compatibility mode is bullshit and got rid of it for good so I don't have to keep messing around with the compatibility settings in the vain, pathetic hope that it will actually work for once.