Office 365 (Known Issues) - Display Name and Profile Information
Users will receive an error when trying to change profile information and will be unable to change these attributes, profile information will appear exactly as it does in UWM White Pages, and display name will appear as it does in UWM White Pages, including full name, middle name or initial, etc.
Resolution Status: Unresolved. IT staff are currently working on a solution to allow users to change their profile information as needed.