Hi. We are about to bring on-prem Exchange back to our organization which is currently hosted. All servers are Windows 2012 R2 and Exchange 2013 will be built on them. We are a little concerned about the Adprep process and need some opinion.
Would Adprep process affect the current state of AD? current users and accounts?
Would it affect the current hosted email? (we don't want email to be cut off)
Is there anything else that we need to be careful about?
Thanks in advance!