Script to pull out last logon date

Question

Hello,
I have a list of user that I would like to pull out last logon date from AD.
This is the script I am using at the moment but it produces blanks and I don't know what the blanks mean.
Import-Module ActiveDirectory
#This script requires PowerShell AD Module
Import-csv "c:\scripts\samaccountname.csv" |
foreach-object {get-aduser $_.samaccountname -Properties lastlogondate} |
select name,Lastlogondate |
Export-csv c:\scripts\LastLogon.csv -NoTypeInformation
Please can you help?
Kind Regards, PenDraKon

Answer 1

If you want an accurate lastLogon date, you have to check across domain controllers.
Here's an advanced function I created a while ago for this.
Function Get-LastLogon {
<#
.SYNOPSIS
Returns LastLogon information
.DESCRIPTION
Queries the LastLogin information for a user across domain controllers and returns the highest (latest) value
.EXAMPLE
Get-LastLogon User
.EXAMPLE
Get-LastLogon -Identity User
.EXAMPLE
Get-ADUser User | Get-LastLogon
.EXAMPLE
Get-LastLogon User1, User2
.PARAMETER users
List of users - pipeline can be used
#>
[CmdletBinding()]
param
[Parameter(Position= 0,
Mandatory=$True,
ValueFromPipeline=$True,
HelpMessage='What user would you like to find the last logon for?')]
$identity
Begin {}
Process {
Foreach ($account in $identity) {
$dateStamp = $null
$domainController =$null
Get-ADDomainController -Filter * | Foreach {
$dc = $_.HostName
$lastLogon = (Get-ADUser $account -Properties LastLogon -server $dc | Select-Object Name,@{n='LastLogon';e={[DateTime]::FromFileTime($_.LastLogon)}}).Lastlogon
If ($dateStamp -le $lastlogon)
$dateStamp = $lastlogon
$domainController = $dc
} # End of ForEach
$properties = @{
Name=$account;
LastLogon=$dateStamp;
DomainController=$domainController}
New-Object -TypeName PSObject -Prop $properties
} # End of ForEach
} # End of Process
End {}
} # End of Function
You can then run...
Import-CSV ".\samaccountname.csv" | % {Get-LastLogon $_.samaccountname}
or...
Import-CSV ".\samaccountname.csv" | % {Get-LastLogon $_.samaccountname} | Export-CSV ".\report.csv" -noType