This question already has an answer here:
Windows Server 2008, I have setup my newest dns servers dns but it's still giving me an error stating that I don't have a loopback! This server is 192.168.1.9
primary 192.168.1.10 seconday 192.168.1.20 and 127.0.0.1 In that order.
This server is a domain controller as well. I refreshed the dns screen and re ran scan (best practices) but still get same error!!!!