Скачать или смотреть How to change UPN Suffix of All Users with PowerShell | Windows Server 2022

#Get a list of the UPN suffixes
Get-ADForest | Format-List UPNSuffixes

#Let’s add the UPN suffix
#Get-ADForest | Set-ADForest -UPNSuffixes @{add="eus.com"}


#List of all the AD Users in the organization
Get-ADUser -Filter * | Sort-Object Name | Format-Table Name, UserPrincipalName

#Change the UPN for all the AD users in the organization
$LocalUsers = Get-ADUser -Filter {UserPrincipalName -like '*vansh.com'} -Properties UserPrincipalName -ResultSetSize $null
$LocalUsers | foreach {$newUpn = $_.UserPrincipalName.Replace("vansh.com","eus.com"); $_ | Set-ADUser -UserPrincipalName $newUpn}

#Confirm that the UPN is changed
Get-ADUser -Filter * | Sort-Object Name | Format-Table Name, UserPrincipalName

#windows
#windowsserver2022
#activedirectory
#microsoft
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