I have an Exchange 2000 domain controller (server 2000) that I am planning to upgrade to 64-bit Exchange 2007 on a Server 2003. The adprep /forestprep command errors. I have checked and the mangled attributes are not the problem. I'm hearing that the entire domain must be upgraded to 2003 before I can proceed. However, I'm at a stopping point since I cannot seem to get past this error w/ Exchange. Please see error message below.
Adprep was unable to extend the schema. [Status/Consequence] There is a schema conflict with Exchange 2000. The schema is not upgraded. [User Action] The schema conflict must be resolved before running adprep. Resolve the schema c onflict, allow the change to replicate between all replication partners, and the n run Adprep. For information on resolving the conflict, see Microsoft Knowledge Base article Q325379.
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