That is a simple error but sometimes it shows up in our Community Forums, basically we cannot move a mailbox if we have any previous move request associated to that given mailbox, even though if that move request has the status Completed.
As a best practice, we should always try to clean up the Move Request after completing it. If you don’t want to do that, you could try to clean them up in a time basis.
In this post we tried first to move the Discovery Mailbox between two Exchange Servers and as soon as we run the New-MoveRequest cmdlet we are getting the message below.
The solution is simple, just make sure that you clean up the Move Requests, first step is to list such requests..
If they are all completed, you don’t have to worry, just run the following cmdlet to clear up the list. If you don’t have them complete, check their status and proceed from there (wait to complete or if it is failed we can check the logs to fix the issue).
Finally, we can go back to the cmdlet that generated the topic of this post and now you move request should be performed just fine.