I'm trying to migrate a Small Business Server 2003 to Server 2008 domain. The problem is when I run the adprep32 /rodcprep command as specified as the final step in Step 3 of this article: http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/A_2881-Migrate-Small-Business-Server-2003-to-Exchange-2010-and-Windows-2008-R2.html I get an error "Adprep could not contact a replica for partition..." which is described in detail here: http://support.microsoft.com/kb/949257 I've also attached the AdPrep.log file for full details. So when I try to run DCPromo on my new Server 2008 PDC (it's not the PDC yet, but want it to be soon), I get an error saying that /rodcprep hasn't ran so there could be errors if I continue. Anyone ran into this or have any suggestions on how to help? Can Dsmgmt be ran on server 2003 to help solve this? Assuming it's a partition error.