So i´m back
Some new informations ! I managed to install the Game on another XBOX One and the result is........... IT WORKS !
I called the Microsoft Support and it seems there is an OS issue on my Box
So i have to wait another 2-3 Days until my new Xbox One arrives.
Hope it works without any Problems ... if thats the case i´ll tell you !!
Have a nice Day guys and much fun with The Witcher