active directory: functional levels
here’s another procedure that doesn’t come up too often…raising the AD functional levels.
to check the current forest and domain functional levels go to AD Domains and Trusts and then right-click on the domain name and choose properties. both functional levels should be listed.
raise domain functional level: right-click the domain name and choose “Raise Domain Functional Level”
raise forest functional level: right-click the root (top entry) of AD Domains and Trusts and choose “Raise Forest Functional Level”
the domain functional level should be raised prior to raising the forest functional level.