Recently I encountered the following error when completing a mailbox move from Exchange to Office 365.
8/1/2015 12:00:00 AM [CY1PR11MB0001] Fatal error MrsHttpUnauthorizedException has occurred.
The initial sync had worked fine. The mailbox was AutoSuspended at 95%. It was ready to be completed. Yet, it did not want to go. I repeated a Resume-MoveRequest on a similar mailbox–same exact error.
Sadly, the interwebs seemed devoid of any real information. Luckily a good friend and colleague alerted me to the root cause. This error will occur if the password has changed on the account used to create the move request.
In my case, this had indeed happened.
The remedy for MrsHttpUnauthorizedException
To fix the issue we need to update the credentials on the move request. [Read more…] about Fatal error MrsHttpUnauthorizedException