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2.381 Attribute userPrincipalName

This attribute contains the UPN that is an Internet-style logon name for a user, as specified in [RFC822]. The UPN is shorter than the DN and easier to remember.

By convention, this attribute should map to the user email name. The value set for this attribute is equal to the length of the user's ID and the domain name.

 cn: User-Principal-Name
 ldapDisplayName: userPrincipalName
 attributeId: 1.2.840.113556.1.4.656
 attributeSyntax: 2.5.5.12
 omSyntax: 64
 isSingleValued: TRUE
 schemaIdGuid: 28630ebb-41d5-11d1-a9c1-0000f80367c1
 systemOnly: FALSE
 searchFlags: fATTINDEX
 rangeUpper: 1024
 attributeSecurityGuid: e48d0154-bcf8-11d1-8702-00c04fb96050
 isMemberOfPartialAttributeSet: TRUE
 systemFlags: FLAG_SCHEMA_BASE_OBJECT | 
  FLAG_ATTR_REQ_PARTIAL_SET_MEMBER

Version-Specific Behavior: Implemented on Active Directory Application Mode (ADAM), Windows Server 2008 operating system, Active Directory Lightweight Directory Services (AD LDS) for Windows Vista, Windows Server 2008 R2 operating system, Active Directory Lightweight Directory Services (AD LDS) for Windows 7, Windows Server 2012 operating system, Active Directory Lightweight Directory Services (AD LDS) for Windows 8 operating system, Windows Server 2012 R2 operating system, Active Directory Lightweight Directory Services (AD LDS) for Windows 8.1 operating system, Windows Server 2016 Technical Preview operating system, and Active Directory Lightweight Directory Services (AD LDS) for Windows 10 operating system.

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