$UpdateSession = New-Object -ComObject Microsoft.Update.Session
$UpdateServiceManager = New-Object -ComObject Microsoft.Update.ServiceManager
$UpdateService = $UpdateServiceManager.AddScanPackageService("Offline Sync Service", "c:\wsusscn2.cab")
$UpdateSearcher = $UpdateSession.CreateUpdateSearcher()

Write-Host "Searching for updates..."
$UpdateSearcher.ServerSelection = 3 # ssOthers
$UpdateSearcher.ServiceID = [string] $UpdateService.ServiceID
$SearchResult = $UpdateSearcher.Search("IsInstalled=0")
$Updates = $SearchResult.Updates
If ($SearchResult.Updates.Count -eq 0) {
  Write-Host "There are no applicable updates."
  Exit
}
Write-Host "List of applicable items on the machine when using wssuscan.cab:"
For ($i = 0; $i -lt $SearchResult.Updates.Count; $i++) {
  $update = $SearchResult.Updates.Item($i)
  Write-Host ($i + 1) "> " $update.Title
}