Changing a users UPN causes a lot of problems
Need a better and more automatic process for changing a users User Principal Name (UPN) when the company name/URL changes. The first time a user logs onto their local computer with their new UPN many Office 365 items are broken. For example, all the user's OneNote's stored in their OneDrive break and have to be manually re-pathed. Meeting requests and OneDrive file shares don't work and have to be re-shared. Outlook and Skype Profiles break and have to be rebuilt. Each user changed looses about an hour of their time. Multiply that by a thousand users and it is a mess.