Topic Last Modified: 2007-03-26

Microsoft Exchange Server 2007 setup cannot continue because the attempted domain preparation failed.

Exchange setup requires that the Active Directory directory service be modified for Exchange Server 2007 before domains in the Active Directory can be prepared.

To resolve this issue, prepare Active Directory with the Setup /PrepareAD command and then prepare the domains.

For more information about how to perform the PrepareAD process, see "How to Prepare Active Directory and Domains" (