Please could you make screenshots in english or you could have helps only in your mother tongue
could you add also the the network and the ip address of your server, if you use virtualization you should check the documentation, for example virtualbox need the promiscuity mode allowed
Welcome to the forum @theemuly,
most people here don’t speak German, so please set your language to English and do a new screenshot.
I’m not one of the people who don’t speak German, so I try to help you, because I can read the error message.
You have to create a green network with a static IP, for example
192.168.2.191.
The IP for Active Directory has to be at the same subnet as the server:
192.168.2.xxx
For example you can choose the IP you tried with.
But be aware that they are not at the DHCP-Range of your network.