Domain Functional Level

Functional levels determine the available active directory domain services ad ds domain or forest capabilities.

Domain functional level. Active directory functional levels are controls that specify which advanced active directory domain features can be used in an enterprise domain. The domain functional level is raised to the second functional level by using the ldp exe utility or the adsiedit msc utility. The enterprise domain is usually comprised of domain controller that run on different versions of the windows server operating system.

This table shows how windows server versions changed regarding domain functional levels and which domain controllers are supported with which domain functional level. What is the domain functional level dfl. The functional level of the active directory domain and forest determines the available features that can be used in the domain and the windows server version you can use on domain controllers.

Domain functional level dfl determines the features of a domain controller dc based on the windows server operating system os it runs on. Supported domain controller os. To directly quote microsoft domain forest functional levels determine the available active directory domain services ad ds domain or forest.

To find the forest functional level use this command. Get adforest fl name forestmode. The domain functional level is programmatically raised to the second functional level by directly modifying the value of the msdsbehaviorversion attribute on the domaindns object.

Feature set of a particular dfl will be available for a dc if it runs on the operating system version that is compatible with the functional level. Get addomain fl name domainmode.