I need to install Exchange 2010 in the same forest with Exchange 2013. However, mistakenly ran /PrepareSchema and /PrepareAD for Exchange 2013 before installing Exchange 2010 first.
I got the message "Setup will prepare the organization for Exchange 2013 by using 'Setup /PrepareAD'. No Exchange 2010 server roles have been detected in this topology. After this operation, you will not be able to install any Exchange 2010 servers.
For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.NoE14ServerWarning.
aspx"
How can I undo AD prep for Exchange 2013?