Tag Archives: Exchange

Duplicate Mailbox issues migrating to Office 365

Recently I had some difficulties with an on-premise to Exchange Online mailbox move. This happened when executing the following command:

New-MoveRequest -Identity <mailbox> -remote -RemoteHostName “<on-prem-hybrid-fqdn>” -TargetDeliveryDomain “<tenant>.mail.onmicrosoft.com”

This resulted in the following error:
The operation couldn’t be performed because