That could be many things. First make sure you don't already have a machine with that name in AD. Secondly check the IP/DNS settings. Are you using DHCP? If so what is handing out IP's? A router or the server? Is DNS on the server? If so set the DNS ip of the station to that of the server and create a host entry in the DNS database.

 

Every Time I try to install either Window Server 2016 or 2012. I'm never able to connect computers to the server or the domain. What would I be doing wrong? If someone can point me in the right direction as far as setting up the server from the beginning and getting the domain setup on other computers. I just can't figure out what I'm doing wrong when I'm setting up the server. So could someone help me please. Thank You!