Knowledge Base

The name of a system user in email address format is known as a User Principal Name (UPN) in Windows Active Directory. The user name (login name), separator (@ symbol), and domain name (UPN suffix) make up a UPN (for instance: henry.williams@domain.com).

Note:

An email address and a UPN are not the same thing. There are situations when a UPN and a user's email address can match, however this is not always the case.

Steps to verify or edit the UPN in Exchange server

1. Launch 'Active Directory Users and Computers' on your domain controller (DC) system. Right-click on any user and select 'Properties'.
2. Choose the 'Account' tab
3. You can verify or modify the UPN on your user in the 'User logon name' section.

You can also set UPN address by running the below Windows PowerShell commands

import-module activedirectoryGet-ADUser -Filter * -SearchBase 'ou=,dc=,dc=' -Properties userPrincipalName | foreach { Set-ADUser $_ -UserPrincipalName ("{0}@{1}" -f $_.name,"")}

Steps to verify or edit the UPN in Office 365

1. Log in to Microsoft 365 admin center
2. Navigate to 'Users' > 'Active users'

   

   You may encounter an issue in Office 365 when the users' UPN suffixes continue to be formatted in the domain-x.onmicrosoft.com format rather than your domain's suffixes (e.g. my-org.com). Run the following Azure Active Directory Module for Windows PowerShell to fix the issue and change the UPN addresses of Office 365 users.

1. Run the below command to import Azure Active Directory Module for PowerShell:

   import-module MSOnline

2. Run the below command to connect to Office 365

   $msolcred = get-credential
   connect-msolservice -credential $msolcred

3. Run the following cmdlet to modify the UPN

   Set-MsolUserPrincipalName -UserPrincipalName -NewUserPrincipalName