Set UPN Suffix using PowerShell
To Prepare for Office 365 Migration you need to add the missing ‘UPN Suffixes’. The following example demonstrates how to create a new UPN suffix for the users in the ThatLazyAdmin forest: Lets Start by running: Import-Module ActiveDirectory Then run : Get-AdForest | Set-ADForest -UPNSuffixes @{Add=”ThatLazyAdmin.com”} Lets verify the new UPN in Active Directory…
