Domain Functional Level Chart
Introduction this is a brief and high level blog on the windows domain functional level dfl.
Domain functional level chart. They also determine which windows server operating systems you can run on domain controllers in the domain or forest. Read only global catalog servers and read only domain controllers are not supported. Domain functional level dfl determines the features of a domain controller dc based on the windows server operating system os it runs on. Domain functional levels and forest functional levels.
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. Value of 0 or not set mixed level domain. Welche domain controller bei welchem domain functional level unterstützt werden geht ebenfalls auf der liste hervor. Functional levels determine the available active directory domain services ad ds domain or forest capabilities.
There are some explanations with the functions up to windows server 2008 r2 and some on the differences between windows server 2008 r2 and windows server 2012. That is to provide support in a domain or forest for advanced active. The following are the values that can be set for this attribute. However functional levels do not affect which operating systems you can run on workstations and member servers that are joined to the domain or forest.
Having compromised a windows domain one of the things i like to do that i think adds real. Active directory functional level dependencies active directory domain and forest functionality has the following dependencies. From the administrative tools menu select active directory domains and trusts or active directory users and computers. Option 1 from admin tools.
Under the general tab the domain functional level and forest functional level is displayed on the screen. Today i recognized that it is not easy to find a comprehensive summary table about active directory domain and forest functional levels operating mode on the internet. Die folgenden tabelle stellt dar wie sich die windows server versionen bezüglich domain functional levels geändert haben. Domain functional level settings the msds behavior version attribute is on the naming context nc head for the domain i e dc corp dc contoso dc com.
After all domain controllers are running an appropriate version of windows server the ad domain or ad forest must be configured to support the appropriate domain or forest functional level. If you have to revert to a lower functional level with a version of windows server that is earlier than windows server 2008 r2 you must rebuild the domain or forest or restore it from a backup copy. An active directory server refers to both writable global catalog servers and to writable domain controllers.