To match a new AD user to an existing 365 user. match UPN and smtp Alias 2 install “Microsoft Online Services Sign in Assistant for IT Professionals 3 Open Powershell (Admin): Install-Module -Name AzureAD 4 connect to AD: Connect-MsolService 5 Return the immutable ID: Get-MsolUser -UserPrincipalName john@cesarhara.com | select ImmutableID […]