I just updated to the current MonoGame Version (22.214.171.1245) and now my game's causing an exception on starting.
using (MyGame game = new MyGame())
Ein Ausnahmefehler des Typs "Microsoft.Xna.Framework.Graphics.NoSuitableGraphicsDeviceException" ist in MonoGame.Framework.dll aufgetreten.
Zusätzliche Informationen: Failed to create graphics device!
Unfortunately I can't tell, which version I used before, but it was an Dev 3.6.0.x, I installed it in October or November last year.
In Game Constructor I do the following stuff on my GraphicsDeviceManager:
graphics = new GraphicsDeviceManager(this);
graphics.HardwareModeSwitch = false;
graphics.PreferMultiSampling = GameSettings.Graphics.MSAA;
Thanks for helping!