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How to Determine forest functional level RRS feed

  • Question

  • Pinnacle is a forest of three domains. The first domain has two domain controllers one running Windows Server 2008 and the second Windows Server 2012 R2. The second domain has a Windows Server 2008 R2 domain controller and a Windows Server 2003 file server. The third domain has two Windows Server 2012 R2 domain controllers and a Windows 2012 file server.

    What would be the highest forest functional level you can configure?

    1. Windows Server 2000

    2. Windows Server 2008

    3. Windows Server 2003

    4. Windows Server 2012


    Tuesday, July 16, 2019 11:05 AM

All replies

  • Hi,

    the AD forest functional devels depends on the domain functionals levels:

    Domain-Functional:

    If you have a WIN 2008 R2 Server and a WIN 2012 Server, you have the potencial to upgrade this domain to Domain-Functional Level Windows Server 2012. Before upgrading you have to remove / decommission the WIN 2008 R2 System.

    Forest-Functional Level:

    To upgrade the forest functional level it is required that all domains must have the same domain functional level.  The Forest functional Level can not be higher than the Domain Function Level.

    In your case the potencial for the highest Forest Functional is Windows Server 2012.

    regards, pat


    • Edited by Pat_306 Tuesday, July 16, 2019 2:06 PM
    • Proposed as answer by Charlie Coverdale Tuesday, July 16, 2019 10:30 PM
    Tuesday, July 16, 2019 1:28 PM
  • If you have a Windows 2008 DC, then the Forest functional level cannot be higher than 2008


    This posting is provided AS IS without warranty of any kind

    Tuesday, July 16, 2019 2:00 PM
  • If you have a Windows 2008 DC, then the Forest functional level cannot be higher than 2008


    This posting is provided AS IS without warranty of any kind

    exactly, i forgot to mention that.

    You have the technical potencial to upgrade to 2012, but at the moment the level can not be higher than 2008.


    Tuesday, July 16, 2019 2:10 PM
  • Thank you so much for the explanation!
    Tuesday, July 16, 2019 8:19 PM
  • Hi,
     
    I am glad to hear that your issue was successfully resolved. If there is anything else we can do for you, please feel free to post in the forum.
     
    Best Regards,
    Lee 

    Just do it.

    Thursday, July 18, 2019 4:47 AM
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    Wednesday, July 31, 2019 7:52 AM