Every time I try to start Arma 3 It gives me a Popup-box saying:

Unexpected error occured:
Durch das Festlegen von connectionId wurde eine Ausnahme ausgelöst. (which translates to:
Trough establishing of connectionId a execption was triggered.)

Details are stored in a text file on your desktop.

I added all crash files and dxdiag.

I hope it is everything you need to help me

Thanks in advance
Michael