I am running a Hyper-V environment and am trying to run my own private domain. I have created a 2003 AD server with DNS and DHCP. I have added both 2003 server and 2008 server to the same virtual network on the hyper-v host and am trying to add them both to the domain on the DC. I am able to add the 2003 VM's to the domain but the 2008 VM's come back with "Domain could not be contacted" errors. Specifically the DNS could be contacted for the SRV record and it returns the correct domain name but the common causes say that the (A) name is incorrect or the DC registered in DNS is not on the network or is not running. I am able to add the 2003 servers to the domain so I know the DC is running. Any thoughts?