Hello,
at the moment I'm facing the following problem:
We are trying to move a lot of Hosted Exchange 2010 Mailboxes to Exchange 2016. The connection between these Exchanges is working fine, trust is also established and the PrepareMoveRequest Script copies the AD-user to the new Active Directory. But if I try
to finally move the mailbox, I get the error message "Failed to convert the source mailbox '' to mail-enabled user after the move. Attempt 0/480. Error: UpdateMovedMailboxPermanentException"
I think this error message relates to the fact, that the Exchange 2010 is running in Hosted Exchange mode. Inheritance is not disabled and the proposed way from Microsoft, to finalize the move manually (https://support.microsoft.com/en-us/help/2745710/a-user-can-t-access-a-mailbox-by-using-outlook-after-a-remote-mailbox-move-from-an-on-premises-exchange-server-environment-to-office-365)
is not option for us.
Any ideas?