How To Change UserPrincipalName with PowerShell

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Add A New UPN Suffix to Active Directory

  • Open Active Directory Domain and Trusts console
  • Right click Active Directory Domain and Trusts -> Properties
  • Add the domain you would like to use

Get Domain Suffixes Currently In AD

	
#Get UPN Suffix using Powershell

Get-ADForest| select UPNSuffixes

Change UserPrincipalName of all the Users in Domain with PowerShell

#Specify UPN Domain
$Domain = 'icloud360.in'
 
#Get list of samaccountnames in our targeted OU
$UserList = Get-ADUser -Filter * -SearchBase 'DC=icloud360,DC=com' | `
select -ExpandProperty SamAccountName
 
#Change UPN Suffix from sub domain to primary domain
foreach ($User in $UserList) {
    Get-ADUser $User | Set-ADUser -UserPrincipalName "$User@$Domain"
}

Change UserPrincipalName of Single Users in Domain with PowerShell

#Change UPN for a single user using Powershell
$Domain = 'icloud360.in'
$User = 'sheik'
Get-ADUser $User | select Name, UserPrincipalName 
 
Get-ADUser $User | Set-ADUser -UserPrincipalName "$user@$domain"

Get-ADUser $User | select Name, UserPrincipalName

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