Office 365 – Why Your UPN Should Match Your Primary SMTP Address

Since the early days of Office 365, the discussion of changing UPNs has been had between consultants and clients. The discussions range from “what is a UPN” to “this line-of-business application uses UPN for login, the application would need to be reinstalled and the vendor is no longer in business”. During Office 365 deployments, I … Continue reading Office 365 – Why Your UPN Should Match Your Primary SMTP Address