FIX: MigrationPermanentException: Cannot find a recipient that has mailbox GUID

I stumbled upon this error while trying to migrate a mailbox back from Exchange Online to Exchange On-Premises. MigrationPermanentException: Cannot find a recipient that has mailbox GUID % The reason for executing this action was the validation of my rollback plan. It turned out I was trying to migrate a mailbox that had never been …

Read moreFIX: MigrationPermanentException: Cannot find a recipient that has mailbox GUID