Reconfiguring other devices and applications.Uninstall the Microsoft Office Outlook Connector.Email notification and send/receive errors.Why are they migrating and what are the benefits?.This guide contains all the information regarding this migration process It’s current status, what you need to do beforehand, what you need to do afterwards and some of the other major changes you need to be aware of. This will give you a much better synching experience to Outlook but unfortunately may require you to re-add the account in Outlook and make some additional changes once your mailbox has been moved over. As announced a while ago, Microsoft is migrating all mailboxes to the Office 365 Exchange Online mail servers.