I have a main Active Directory server that acts as a domain server, and the other one I have in the same network and from one to the other they are, but I can not put the second one in domain, he says
Unable to contact an Active domain controller Directory in the DOMAIN domain, make sure the domain name is written correctly.
In my case, the domain name is spelled correctly.
The DNS is correctly like all other computers in the building but there is no way to connect the secondary server.