So I figured it out with the help of another forum.
It is an issue on MS side and there is a workaround by editing the Registry:
https://social.technet.microsoft.com/Forums/windows/en-US/9cab3e8e-6cc4-48e4-8ed9-d595bc83f04b/windows-mobile-device-centre?forum=win10itproapps
This will fix the issue, but I hope MS will release an official fix for this.
Kind Regards,
Kevin