I have performed a migration from Exchange 2013 to Exchange Online multiple times this week. Unfortunately, one users mailbox stalls every time i try to migrate it. The Get-MoveRequestStatistics Returns:
DisplayName StatusDetail TotalMailboxSize TotalArchiveSize PercentComplete
----------- ------------ ---------------- ---------------- ---------------
XXXXXXXXXXXXXXX... StalledDueToSource_Unk... 9.816 GB (10,539,337,2... 0 B (0 bytes) 94
The job makes it to 94% complete and Stalls due to "UnknownReason"
This migration batch only has one mailbox being moved. Furthermore, I can create other migration batches and they will "Complete" with no issues.
My Luck is that the mailbox that I am having issues moving is the most important in my organization.
Has anyone experienced a StalledDueToSource_UnkownReason before? Any help would be appreciated.