I tried installing AD on Windows Server 8 DP build, explained here. Everything went fine as long as I went with the default values for the forest & domain functional level, which is Windows 2008 R2.
Just being curious about any new functionalities that a pure Windows Server 8 functional level might expose, I changed the forest & domain functional level to Windows Server 8 during dcpromo. To my surprise, it didn’t like it! The wizard threw an error when the prerequisite check was done. The error is shown below.
DCPromo Failed With Code: 77. The Specified value ‘5’ Is Not Valid For The Argument ‘DomainLevel’
Is this a bug Microsoft? Or is it looking for some prerequisites that needs to be installed to have a pure Windows Server 8 domain? If so, why doesn’t it say what is required?
As soon as I changed the functional levels to 2008 R2, installation went smooth. Anyone else having the same issue?