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2014-10-29

PwdLastSet vs PasswordLastSet Property

One of the interesting things, when you run "GET-ADCOMPUTER" cmdlet to find out the last time computer password was set, is that there are actually two different properties for that value. One of them, pwdLastSet is NOT so friendly...

D:> Get-ADComputer adil-7600-8 -Properties pwdlastset
pwdlastset        : 130575614253222449


The other property, PasswordLastSet is as helpful as it gets:

D:> Get-ADComputer adil-7600-8 -Properties passwordlastset
PasswordLastSet   : 10/12/2014 12:23:45 AM

Why? Well, I am not sure why Microsoft decided to provide two different properties for this value, probably pwdLastSet is easier for calculations. That is probably why the type of pwdLastSet is signed 64 bit integer (int64) vs. DateTime for PasswordLastSet

D:> Get-ADComputer adil-7600-8 -properties pwdlastset |get-member pwdlastset

   TypeName: Microsoft.ActiveDirectory.Management.ADComputer

Name       MemberType Definition
----       ---------- ----------
pwdlastset Property   System.Int64 pwdlastset {get;set;}

D:> Get-ADComputer adil-7600-8 -properties passwordlastset |get-member passwordlastset


   TypeName: Microsoft.ActiveDirectory.Management.ADComputer

Name            MemberType Definition
----            ---------- ----------
PasswordLastSet Property   System.DateTime PasswordLastSet {get;set;}

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