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Thread: Domain functional level

  1. #1
    Join Date
    Sep 2005

    Domain functional level

    I am using Windows Server 2003 AD domain in Windows 2000 mixed mode. We are also having a single Exchnage 2003, which is configured for RPC over HTTPS, server and ISA 2004 at the perimeter. I am looking to raise the domain functional level to Windows 2003. What is the disadvantage and any advantage for the same. Thanks.

  2. #2
    Join Date
    Sep 2005

    Re: Domain functional level

    Check the below link that discusses raising the domain and forest functional levels that are supported by Microsoft Windows Server 2003-based or newer domain controllers:

  3. #3
    Join Date
    Feb 2009
    In my domain, the functional level is Windows 2000 native.

    I am trying to raise the functional level and receive an error that can not.
    When I look at the log file it states that -
    The following domain controllers are running earlier versions of windows:
    xx.xx.xx server.domain. Windows Server 2003 5.2 (3790)

    There are 3 domain controllers in this domain, earch running enterprise 2003 sp2. I do not know why it says earlier version - what does this mean? It is has current updates applied.

    I want to raise it to windows 2003. The server it is squawking about has 2003 on it and there are no other DC with 2000

  4. #4
    Join Date
    Feb 2006
    The domain controller that you were having was "xx.xx.xx server.domain. Windows Server 2003 5.2 (3790)" or previously a windows 2000 server that was upgraded to 2003? You will need to check manually the guidelines given in the microsoft website link above and see if that solves the issue.

  5. #5
    Join Date
    Feb 2009

    Re: Domain functional level

    Still dealing with this...

    The specific error, when I R click on domain and select Raise Domain function level is:
    Current domain functional level:
    Windows 2000 native
    You cannot raise the domain functionallevel because this domain includes domain controllers that are not running the appropriate version of Windows.

    To save a file with the details on which domain controllers need to be upgraded, clice Save As.

    When I save the file it gives the name of one of my DC's. But is is Windows 2003. It was an inplace upgrade way back.

    No matter what I do, can not raise. I have even tried the manual process and that will not work, same errors.

    Tomorrow, am calling MS.

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