UPN vs sAMAccountName in Active Directory? 6 facts to help you quickly understand the difference! ⬇️ 
1) The UPN and sAMAccountName are user account attributes in Active Directory that identify logon names and IDs used for security purposes.
2) The sAMAccountName was used in previous versions of Windows for authentication purposes. It is a logon name with a limit of 20 characters and must be unique within a domain.
3) The UPN, introduced with Active Directory in Windows 2000, is the more modern attribute and an Internet-style login name based on RFC 822. It maps to a user's email address and is shorter and easier to remember than a distinguished name.
4) A UPN consists of a UPN prefix (user account name) and a UPN suffix (DNS domain name), joined by the '@' symbol.
5) A sAMAccountName and UPN can be different and there may be advantages to using differing attributes for each.
6) UPN suffixes can be added to a domain in Active Directory Domains and Trusts by a user in the Domain Admins or Enterprise Admins security groups or with delegated authority.
Click here to read in more detail about the UPN and sAMAccountName Active Directory user attributes: petri.com/upn-samaccount… #Microsoft #WindowsServer
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