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How to obtain password expiration date by using LDAP ADSI provider

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Summary

This article contains sample code that demonstrates how to use the LDAP ADSI provider to obtain the password expiration date of an Active Directory user.

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More information

This article contains sample code for the following programs:
  • Visual Basic
  • VBScript

Visual Basic Sample Code

To use the following Visual Basic sample code, you must add Active DS Type Library to your Project's reference. 
    
    '========================================
    ' First, get the domain policy.
    '========================================
    Dim oDomain As IADsContainer
    Dim oUser As IADsUser
    Dim maxPwdAge As LargeInteger
    
    '========================================
    ' Declaring numDays as Currency, due to a
    ' large number calculation.
    '========================================
    Dim numDays As Currency
    
    strDomainDN = "YOURDOMAIN"
    strUserDN = strDomainDN & "/CN=John Doe,CN=Users,DC=YOURDOMAIN,DC=COM"
    
    Set oDomain = GetObject("LDAP://" & strDomainDN)
    Set maxPwdAge = oDomain.Get("maxPwdAge")

    '========================================
    ' Calculate the number of days that are
    ' held in this value.
    '========================================
    numDays = ((maxPwdAge.HighPart * 2 ^ 32) + _
                maxPwdAge.LowPart) / -864000000000@
    Debug.Print "Maximum Password Age: " & numDays
    
    '========================================
    ' Determine the last time that the user
    ' changed his or her password.
    '========================================
    Set oUser = GetObject("LDAP://" & strUserDN)

    '========================================
    ' Add the number of days to the last time
    ' the password was set.
    '========================================
    whenPasswordExpires = DateAdd("d", numDays, oUser.PasswordLastChanged)
    
    Debug.Print "Password Last Changed: " & oUser.PasswordLastChanged
    Debug.Print "Password Expires On: " & whenPasswordExpires

    '========================================
    ' Clean up.
    '========================================
    Set oUser = Nothing
    Set maxPwdAge = Nothing
    Set oDomain = Nothing

VBScript Sample Code

To use the following sample you code, you must copy the code to a text file with a .vbs file extension. 

    '========================================
    ' First, get the domain policy.
    '========================================
    Dim oDomain
    Dim oUser
    Dim maxPwdAge
    Dim numDays
   
    strDomainDN = "YOURDOMAIN"
    strUserDN = strDomainDN & "/CN=John Doe,CN=Users,DC=YOURDOMAIN,DC=COM"
    
    Set oDomain = GetObject("LDAP://" & strDomainDN)
    Set maxPwdAge = oDomain.Get("maxPwdAge")

    '========================================
    ' Calculate the number of days that are
    ' held in this value.
    '========================================
    numDays = CCur((maxPwdAge.HighPart * 2 ^ 32) + _
                    maxPwdAge.LowPart) / CCur(-864000000000)
    WScript.Echo "Maximum Password Age: " & numDays
    
    '========================================
    ' Determine the last time that the user
    ' changed his or her password.
    '========================================
    Set oUser = GetObject("LDAP://" & strUserDN)

    '========================================
    ' Add the number of days to the last time
    ' the password was set.
    '========================================
    whenPasswordExpires = DateAdd("d", numDays, oUser.PasswordLastChanged)
    
    WScript.Echo "Password Last Changed: " & oUser.PasswordLastChanged
    WScript.Echo "Password Expires On: " & whenPasswordExpires

    '========================================
    ' Clean up.
    '========================================
    Set oUser = Nothing
    Set maxPwdAge = Nothing
    Set oDomain = Nothing

    WScript.Echo "Done"

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References

For more information about Active Directory Service Interfaces (ADSI) reference documentation, visit the following MSDN Web site:
Platform SDK
http://msdn2.microsoft.com/en-us/library/aa772170.aspx
For more information about how to determine the last time the password was changed, click the following article number to view the article in the Microsoft Knowledge Base:
192949 How to find password last changed date using ADSI

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Keywords: KB323750, kbhowto, kbdswadsi2003swept

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Article Info
Article ID : 323750
Revision : 6
Created on : 5/19/2005
Published on : 5/19/2005
Exists online : False
Views : 642