In place upgrade 2008 DC to 2008 R2? RRS feed

  • Question

  • I am wondering what the procedure is for upgrading a Windows Server 2008 ADDS environment to ADDS 2008 R2?
    Tuesday, August 18, 2009 8:50 PM


  • We recently published an article on TechNet: How to Upgrade Domain Controllers to Windows Server 2008 or Windows Server 2008 R2 at http://technet.microsoft.com/en-us/library/ee522994(WS.10).aspx 
    It covers the issue about new 32-bit and 64-bit versions of adprep.exe and several other issues to be aware of if you are upgrading domain controllers to Windows Server 2008 or Windows Server 2008 R2.
    We expect to continue updating the topic as we gain more experience from customer deployments.
    Please use the feedback link in the upper right-hand corner of the topic to let us know what you think of it and ways you want to see it improved.

    I hope it helps,
    Justin [MSFT]
    AD Documentation team
    • Marked as answer by Mervyn Zhang Monday, September 28, 2009 3:02 AM
    Friday, September 25, 2009 9:57 PM
  • Use adprep from installation media of the newer version to extend schema

    Install/upgrade the servers to newer version.
    As 2008R2 is only 64bit, you can't upgrade the server if old server is running 32bit version. In that case, you nead to do a clean installation instead of upgrade.

    Before upgrading/reinstalling the DCs holding FSMOs, transfer the roles to another DC.
    • Marked as answer by Shon Miles Wednesday, August 19, 2009 1:43 PM
    Tuesday, August 18, 2009 9:44 PM
  • Hi,


    Thanks for your post.


    Henrik is correct. To upgrade the domain to Windows Server 2008 R2, please run adprep commands to prepare the forest and domain, and then upgrade the system to Windows Server 2008 R2.





    Windows Server 2008 R2 Upgrade Paths



    If the server is running a 32bit operating system, please refer to the following migrate guide:


    Active Directory Domain Services and DNS Server Migration Guide



    Note: Please perform a full backup before you perform the operations.   


    Joson Zhou

    TechNet Subscriber Support in forum

    If you have any feedback on our support, please contact tngfb@microsoft.com

    This posting is provided "AS IS" with no warranties, and confers no rights.
    • Marked as answer by Joson Zhou Thursday, August 20, 2009 1:46 AM
    Wednesday, August 19, 2009 2:51 AM

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