Last-Logon attribute

Article
12/14/2020
2 minutes to read

The last time the user logged on. This value is stored as a large integer that represents the number of 100-nanosecond intervals since January 1, 1601 (UTC). A value of zero means that the last logon time is unknown.

Entry	Value
CN	Last-Logon
Ldap-Display-Name	lastLogon
Size	8 bytes
Update Privilege	This value is set by the system.
Update Frequency	Each time the user logs on.
Attribute-Id	1.2.840.113556.1.4.52
System-Id-Guid	bf967997-0de6-11d0-a285-00aa003049e2
Syntax	Interval

Windows 2000 Server

Entry	Value
Link-Id	-
MAPI-Id	-
System-Only	False
Is-Single-Valued	True
Is Indexed	False
In Global Catalog	False
NT-Security-Descriptor	O:BAG:BAD:S:
Range-Lower	-
Range-Upper	-
Search-Flags	0x00000000
System-Flags	0x00000011
Classes used in	User

Windows Server 2003

Entry	Value
Link-Id	-
MAPI-Id	-
System-Only	False
Is-Single-Valued	True
Is Indexed	False
In Global Catalog	False
NT-Security-Descriptor	O:BAG:BAD:S:
Range-Lower	-
Range-Upper	-
Search-Flags	0x00000000
System-Flags	0x00000011
Classes used in	User

Windows Server 2003 R2

Entry	Value
Link-Id	-
MAPI-Id	-
System-Only	False
Is-Single-Valued	True
Is Indexed	False
In Global Catalog	False
NT-Security-Descriptor	O:BAG:BAD:S:
Range-Lower	-
Range-Upper	-
Search-Flags	0x00000000
System-Flags	0x00000011
Classes used in	User

Windows Server 2008

Entry	Value
Link-Id	-
MAPI-Id	-
System-Only	False
Is-Single-Valued	True
Is Indexed	False
In Global Catalog	False
NT-Security-Descriptor	O:BAG:BAD:S:
Range-Lower	-
Range-Upper	-
Search-Flags	0x00000000
System-Flags	0x00000011
Classes used in	User

Windows Server 2008 R2

Entry	Value
Link-Id	-
MAPI-Id	-
System-Only	False
Is-Single-Valued	True
Is Indexed	False
In Global Catalog	False
NT-Security-Descriptor	O:BAG:BAD:S:
Range-Lower	-
Range-Upper	-
Search-Flags	0x00000000
System-Flags	0x00000011
Classes used in	User

Windows Server 2012

Entry	Value
Link-Id	-
MAPI-Id	-
System-Only	False
Is-Single-Valued	True
Is Indexed	False
In Global Catalog	False
NT-Security-Descriptor	O:BAG:BAD:S:
Range-Lower	-
Range-Upper	-
Search-Flags	0x00000000
System-Flags	0x00000011
Classes used in	User

Remarks

The high part of this large integer corresponds to the dwHighDateTime member of the FILETIME structure and the low part corresponds to the dwLowDateTime member of the FILETIME structure.

This attribute is not replicated and is maintained separately on each domain controller in the domain. To get an accurate value for the user's last logon in the domain, the Last-Logon attribute for the user must be retrieved from every domain controller in the domain. The largest value that is retrieved is the true last logon time for that user.