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Windows Server 2012 inplace upgrade from Windows Server 2008 Standard R2 RRS feed

  • Question

  • While installing  Windows Server 2012 R2 Standard, the system does a compatibility check and informs that it needs to run adprep.exe . On checking with Windows Server 2012 R2 under sources folder there is no file ADPREP.exe and on looking at WS 2008 cd drive it has a folder named ADPREP.exe and when I try to run it it comes out NETAPI dll error. I am not able to instal the WS 2012 R2. please let me know.
    Wednesday, January 8, 2020 3:11 PM

All replies

  • An in-place upgrade is a very risky move and never recommended. As to location take a look in the \support folder on 2012 R2 installation media.

     

     



    Regards, Dave Patrick ....
    Microsoft Certified Professional
    Microsoft MVP [Windows Server] Datacenter Management

    Disclaimer: This posting is provided "AS IS" with no warranties or guarantees, and confers no rights.

    Wednesday, January 8, 2020 3:34 PM
  • Hi,

    If you want perform a upgrade in-place for your domain controller on Windows 2008 R2 to Window 2012 R2 , you have to launch manually the following commands

    adprep /forestprep
    adprep /domainprep

    AS mentioned by Dave the upgrade in-place is not recommended method to upgrade a domain controller.


    Please don't forget to mark the correct answer, to help others who have the same issue. Thameur BOURBITA MCSE | MCSA My Blog : http://bourbitathameur.blogspot.fr/

    Wednesday, January 8, 2020 10:46 PM
  • This process is well documented at https://blogs.technet.microsoft.com/canitpro/2014/05/27/step-by-step-active-directory-migration-from-windows-server-2008-r2-to-windows-server-2012-r2/

    You need to use WS 2012 R2 installation media. 

    hth
    Marcin

    Wednesday, January 8, 2020 11:08 PM
  • Hi, 

    Adprep.exe is located in the \support\adprep folder of the Windows Server 2012 R2 installation disc by default. Please check the path on your side. 

    bests, 


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    Thursday, January 9, 2020 8:00 AM
  • Hello,

    Thank you for posting in our TechNet forum.

    In order to understand the issue better, it will be appreciate for you to provide the complete error.

    Please run the command as administrator: dcdiag /v and provide the error.

    The following link can be for your reference:

    Step-By-Step: Active Directory Migration from Windows Server 2008 R2 to Windows Server 2012 R2:
    https://docs.microsoft.com/en-us/archive/blogs/canitpro/step-by-step-active-directory-migration-from-windows-server-2008-r2-to-windows-server-2012-r2

    Best regards,

    Jolin


    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Thursday, January 9, 2020 9:06 AM
  • Hello,

    Just checking in to see if the information provided was helpful.

    Please let us know if you would like further assistance.

    Jolin


    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Monday, January 13, 2020 1:35 AM
  • Hello

    Just checking in to see if the information provided was helpful.

    Please let us know if you would like further assistance.

    Jolin


    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Wednesday, January 15, 2020 1:41 AM