The forest functional levels have been updated to values that are incompatible with the functional level supported by this ...

The forest functional levels have been updated to values that are incompatible with the functional level supported by this operating system.



New forest functional level:
%1

Operating system functional level range:
%2 to %3



As a result, the local Active Directory Domain Controller will be isolated from the forest.



User Action

Install an operating system compatible with the functional level of the forest on the local Active Directory Domain Controller or update the functional level of the forest to be compatible with the functional level supported by this operating system.