In this post we will troubleshoot a problem you can encounter when you are extending the Active Directory schema for Exchange 2010. You can read this technet article for the steps to prepare the AD schema for Exchange 2010.

We encountered some problems when launching the command line:”setup.com /PrepareAD /OrganizationName:<Organization Name>”. First an error occurred and the setup process exited, after fixing this we had a warning when running the command.
Read more »