I am new to Windows Server 2008 so I have setup a small practice network to practice it. I am currently practicing using this as a domain controller. Thus I have it running the role of Active Directory Domain Services. For now in order to keep the server simple I have left DHCP and DNS functionality to a SOHO router. The server is setup with a static IP address and default gateway and dns server pointing toward the router. I also have a desktop relying on DHCP. The problem I am running into is that I can't get the desktop to join a domain I've created. It gives an error message that the domain could not be contacted with a more specific error "DNS name does not exist". Do I have to somehow register my domain name within the router so workstations can find it? The server and desktop can ping each other just fine so I should have the network setup, I'm just assuming I am missing something small.
-Make sure Windows Firewall is disabled on both of the systems
-You should have installed DNS when You installed active directory with dcpromo, having DNS is required for the clients to see the DC
-Make sure that the router you are using has a static IP address set for the server in the configuration settings
-I disabled IPv6 too
-Clients should be pointed to your server for preferred DNS
-Your server should be pointed to itself for preferred and your external ISP's DNS server for alternate
-Your router could be your default gateway but you should not need to specify that in order for it to work