The game starts up just fine and runs fine in windowed mode, but the second I hit either Alt+Tab or go to the System Settings to change to Full Screen mode in game, the client immediately minimizes itself and will not let me change it back to windowed mode so i end up having to force close it from Task Manager. It happened once before but it somehow got fixed and now it's happening again. I've tried restarting my computer and changing properties to see if that would fix it but nothing so far. Any help would be appreciated.
Try running the application in compatibility mode. run in Win XP SP3 if not also try Win 7 compatibility.
This thread can be closed. I figured out that it was the fact that I had the Steam client running in the background processes and for some reason that was preventing me from putting Mapleroyals in full screen. I have no idea why this was the case, but I can confirm this is the reason why it happens.