Good Afternoon,
I recently installed Exchange 2013 with the CU1 update and am trying to migrate mailboxes over to 2013. Before I was even able to get into my EAC I had to manually had my SYSTEMS\Administrator login to the Exchange Organization Admins. I found out this seems to happen when you do an /PrepareAD with a different login than you are using.
I am in a setup with three domains; the exchange server is in a sub domain and only supplies mailboxes for the subdomain users. The schema update and prepareAD was completed in the FOREST level domain.
When I migrate a mailbox it seems to migrate the entire mailbox but when it goes to perform clean up it fails, with the following error.
Failed to reset the target mailbox after the move. Attempt 27/481. Error: MapiExceptionADUnavailable.
Any help would be of great assistance.
Cheers,
Johnathan