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Domain Functional Level

  • Article

Applies To: Windows Server 2008

The Security Accounts Manager (SAM) is a service that is used during the logon process. The SAM maintains user account information, including groups to which a user belongs. The SAM is attempting to change the domain functional level to a state that provides new features but has less compatibility with earlier versions of the operating system.

Events

Event ID Source Message

16408

SAM

 Domain functional level has been changed to Windows 2000 Native. The change cannot be reversed.

Database/Configuration

Active Directory