How to change the user UserPrincipalName in O365 for one user.
Issue: If a user was imported via AD but shows up with the wrong username on the O365 side (ending in .onmicrosoft.com) Resolution: 1. Go to Active Directory Users and Computers 2. Go to View and select Advanced Features 3. Go to properties of user account 4. Go to Attribute Editor 5. Edit Proxy Address […]