Domain Controller Functional Level Upgrade

This list covers general steps to follow before you promote a domain controller that runs a newer version of windows server.

Domain controller functional level upgrade. Cette méthode est préférable à la mise à niveau du système d exploitation d un contrôleur de domaine existant. A new domain that is created on a domain controller that runs at least windows server 2012 r2 must be set to the windows server 2008 domain functional level or higher. Right click the domain you want to raise the functional level of as in example below and then select raise domain functional level. The recommended way to upgrade a domain is to promote domain controllers that run newer versions of windows server and demote older domain controllers as needed.

That method is preferable to upgrading the operating system of an existing domain controller. After upgrading all dcs in the domain or forest the administrator is able to raise the functional level and this level acts as a flag informing the dcs and other components as well that certain features can now be enabled. Select start administrative tools active directory domains and trusts. Windows server 2003 interim applies to the following scenarios.

The recommended way to upgrade a domain is to promote domain controllers that run newer versions of windows server and demote the older domain controllers as needed. Before you raise the domain functional level you must upgrade all windows server 2003 based domain controllers in that domain to windows server 2008 or windows server 2008 r2. Windows 2000 server domain controllers are not supported in this mode. The recommended way to upgrade a domain is to promote domain controllers that run newer versions of windows server and demote the older domain controllers as needed.

This functional level is provided for upgrades of existing windows nt 4 0 domains where one or more windows nt 4 0 backup domain controllers bdcs must function after the upgrade. The domain also has to use dfs r as the engine to replicate sysvol. That method is preferable to upgrading the operating system of an existing domain controller. There are no new forest or domain functional levels added in this release.

After you upgrade all the windows server 2003 based domain controllers in the forest to windows server 2008 or windows server 2008 r2 you can raise the forest functional level to windows server 2008 or windows server 2008 r2. The minimum requirement to add a windows server 2019 domain controller is a windows server 2008 functional level.