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  • Status: Solved
  • Priority: Medium
  • Security: Public
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ADPREP unable to extend the schema during adprep /forestprep

I am trying to introduce a 2003 server into a 2000 domain  to replace the bdc which has died (cannot boot up at all). I am trying to run adprep /forestprep from the pdc.  I have verified that it is running all the fsmo roles and is the schema master.  I get the following message when running adprep /forestprep::

"The schema master did not finish replication after last reboot. The schema master must complete at least one replication cycle before the schema can be extended. Verify that the schema master is connected to the network and can communicate with other domain controllers. Use the Sites and Services snap in to replicate between the schema operations master and at least one replication partner.  After replication has succeeded, run adprep again."

I cannot replicate, as the other dc is dead.  Should I delete that server?

1 Solution
The dead DC has to be removed from AD:

How to remove data in Active Directory after an unsuccessful domain controller demotion

Delete Failed DCs from Active Directory
first remove the metadata properly from active directory by using NTDSUTIL  then try again.
if still same error appears try switch

adprep /forestprep /nofilecopy (some times this helps because PDC tries to copy db files of old 2000 dc in two locations and you can skip this safely.

Perfect solution!!!. Really well documented.


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