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Thread: 2008 DC on 2003 forest, dcpromo fails after adprep

  1. #1
    Join Date
    Oct 2006
    Posts
    28

    2008 DC on 2003 forest, dcpromo fails after adprep

    We have a setup of Windows Server 2003 at Functional level with Forest 2003. Now we are also trying to add a Windows Server 2008 64 DC to the same which we are running from past few weeks. After running DCPROMO I got notification saying that I haven’t ran adprep yet. Hence I copied the adprep folder from the 2008 cd and log on to the current and woefully overloaded DC.I run adprep /forestprep and adprep /domainprep /gpprep.

    All done, and now when I try to run dcpromo on the 2008 box it still says that I need to run adprep /forestprep. Why now again? Though I ran it again, it gives me the same message again and again. Do anyone else have come through such situation? Please help.

  2. #2
    Join Date
    Nov 2005
    Posts
    143

    Re: 2008 DC on 2003 forest, dcpromo fails after adprep

    Hello IndrneeL. Can you just clarify exactly how many DCs do you guys have currently? Also did you tried running the adprep on Schema Master?

    Will i be correct if i say that your 2008 server's DNS settings in IP properties are the same as 2003 DC's IP addresses? Did you check Event Viewer? Are there any logs generated?

  3. #3
    Join Date
    Sep 2005
    Posts
    226

    Re: 2008 DC on 2003 forest, dcpromo fails after adprep

    I will suggest that you should not copy the adprep folder to the server. Instead simply run it from the disk itself because I have seen many people saying that they get some problem running adprep from server but works fine from disk itself.

    Apart from this, can you just post the adprep logfile from the 2003 DC where you run it? It will help me to help you more.

  4. #4
    Join Date
    Oct 2006
    Posts
    28

    Re: 2008 DC on 2003 forest, dcpromo fails after adprep

    Thank you very much for the help guys. Here are the details of first log for comparison, which was just a adprep /forestprep.

    *********
    Adprep successfully set the forest Update revision attribute to 2 on
    object
    CN=ActiveDirectoryUpdate,CN=ForestUpdates,CN=Configuration,DC=domainnamereplaced,DC=com.

    [Status/Consequence]

    Adprep updates the forest Update revision attribute in order to mark
    the forest as prepared. Adprep is continuing and will now prepare the
    forest.

    Adprep set the value of registry key System\CurrentControlSet\Services
    \NTDS\Parameters\Schema Update Allowed to 0

    Adprep successfully updated the forest-wide information.
    **************

    Thanks again.

  5. #5
    Join Date
    Jan 2006
    Posts
    278

    Re: 2008 DC on 2003 forest, dcpromo fails after adprep

    Please post an unedited ipconfig /all from the schema master and the 2008 VM.

    Best regards

  6. #6
    Join Date
    Oct 2006
    Posts
    28

    Re: 2008 DC on 2003 forest, dcpromo fails after adprep

    Windows IP Configuration
    Host Name . . . . . . . . . . . . : 2003schemamaster
    Primary Dns Suffix . . . . . . . : domainnamereplaced.com
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : domainnamereplaced.com

    Ethernet adapter Local Area Connection:
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Intel 8255x-based PCI Ethern
    Physical Address. . . . . . . . . : xxxx
    DHCP Enabled. . . . . . . . . . . : No
    IP Address. . . . . . . . . . . . : 172.50.20.5
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 172.50.20.1
    DNS Servers . . . . . . . . . . . : 172.50.20.5
    208.67.222.222

    ************

    Windows IP Configuration
    Host Name . . . . . . . . . . . . : 2008soontobeDC
    Primary Dns Suffix . . . . . . . : domainnamereplaced.com
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : domainnamereplaced.com

    Ethernet adapter Local Area Connection:
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network
    Connection
    Physical Address. . . . . . . . . : xxxxx
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    Link-local IPv6 Address . . . . . : xxxxx(Preferred)
    IPv4 Address. . . . . . . . . . . : 172.50.20.53(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 172.50.20.1
    DNS Servers . . . . . . . . . . . : 172.50.20.93
    172.50.20.5
    NetBIOS over Tcpip. . . . . . . . : Enabled

  7. #7
    Join Date
    Sep 2004
    Posts
    208

    Re: 2008 DC on 2003 forest, dcpromo fails after adprep

    Alrite, i got it. You will need to remove the 208.67.222.222 form the DNS server. As i guess this is ISP's DNS server, you may need to add this as a forwarder under the DNS server properties in the management console under FORWARDERS tab.

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