Promoting 2008 R2 server in an SBS 2003 domain

Rick Barwig
Rick Barwig used Ask the Experts™
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I have an SBS 2003 SP2 box that is the PDC in the domain.  I am logging in administrator which is a memeber of enterprise admins.  The functional level of the domain and forest is 2003.  I have added the 2008 R2 box as an additional DC, and it added successfully.  Now if I try to open ADUC on the 2008 box I get:
Naming informationcannot be loctaed for the following reason:  The server is not operational.  If you are trying to connect to a windows 200 server, verify that SP3 is installed.

If I try to open Domains and Trusts, I get "you cannot modify domain or trust information because a primary domain controller cannot  be contacted.

In the big picture I am trying to move off of SBS to 2008 R2, and one of the main hurdles is trying to authorize the DHCP server (authorice not displayed)
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Can you check if the Primary DC is powered on ..
Top Expert 2012

Commented:
Run dcdiag to check health of the new DC.

We could be looking at replication issues here
Did you run forest prep and ad prep on sbs 2003 prior to promo of the 2008 box?
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Rick BarwigConsultant

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Commented:
Powered on ?  really?  Yes I am logged into it via RDP.
I will run dcdiags
yes promoted to 2003, was not usre if I should take higher as the SBS box is not ready to be demoted (removed) yet
Adprep forest prep prepares the domain, doesn't actually raise the functional level.
In audc on the sbs box, is the 2008 system showing as member server or dc?   If it is showing as s dc I am going to bet you have a dns issue

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