Windows Server 2008 DCPROMO
During DCPROMO in Windows Server 2008, If you select the option to install DNS, you might receive a message that indicates that a DNS delegation for the DNS server could not be created and that you should manually create a DNS delegation to the DNS server to ensure reliable name resolution.
If you are installing an additional domain controller in either the forest root domain or a tree root domain, you do not need to create the DNS delegation. This is a known issue by Microsoft. Just click Yes and disregard the message.
