LastLogon-FromAllDCs

Import-Module ActiveDirectory

function Get-ADUsersLastLogon()
{
  $dcs = Get-ADDomainController -Filter {Name -like "*"}
  $users = @("spa", “csc”)
  $time = 0
  $exportFilePath = "c:\users\adminslpv\lastLogon.csv"
  $columns = "name,username,datetime"

  Out-File -filepath $exportFilePath -force -InputObject $columns

  foreach($user in $users)
  {
   # $user = Get-ADUser $user
    Write-Host $user
    foreach($dc in $dcs)
    { 
      $hostname = $dc.HostName
      #Write-Host $hostname
      $currentUser = Get-ADUser $user -Properties LastLogonTimestamp -Server $hostname # | Get-ADObject -Server $hostname -Properties LastLogon
       # Write-Host $currentUser.LastLogonDate
      if($currentUser.LastLogonTimestamp -gt $time) 
      {
        $time = $currentUser.LastLogonTimestamp
      }
    }

    $dt = [DateTime]::FromFileTime($time)
    $row = $currentUser.Name+","+$currentUser.SamAccountName+","+$dt

    #Write-Host $row
    Out-File -filepath $exportFilePath -append -noclobber -InputObject $row
   
    $time = 0
  }
}

Get-ADUsersLastLogon