After having demoted and removed one of two domain controllers I cannot add any new servers to the AD. Both the DC and the server I am trying to add is running Server 2016. I have enabled netbios over TCP/IP. The new machine has only the DC as DNS, I have started the netlogon service and the DC passes all teh dcdiag tests. The new machine can ping the DC and vice versa. I am completely stumped.
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