Office 365 Mailbox Move Fails – The Remote Server Returned An Error (401) Unauthorized.

I came across the call to ‘https://mail.domain.com/EWS/mrsproxy.svc failed error while trying to move a mailbox from Exchange on-premise to Office 365. While the first line of the error message suggests a network connectivity issue in reaching my EWS endpoint, the full error message gave the bigger picture.  Error: The call to ‘https://mail.domain.com/EWS/mrsproxy.svc’ failed. Error details:…

Azure AD Connect Not Synchronizing Shared and Resource Mailboxes

I was at a customer site who was having issues with Azure AD Connect not synchronizing shared and resource mailboxes to Office 365. In short, any accounts that is in a disabled state. By default, Azure AD Connect does synchronize disabled accounts. In an Exchange hybrid deployment, it is crucial that the shared and resource…

[Solved] Hybrid Configuration Wizard Stuck on ‘Adding Federated Domain’ Stage

How to go past the ‘Adding Federated Domain’ status in the hybrid configuration wizard, while running from an Exchange 2016 CU7 server? More… I have come across this issue a couple of times now and mostly while the server from which I am running the hybrid configuration wizard is Exchange 2016 CU7. This is not…