$logPath = "\\<ファイルサーバー名またはIPアドレス>\<共有名>\logs\wuscan_$(hostname).csv"
$scancabPath = "\\<ファイルサーバー名またはIPアドレス>\<共有名>\wsusscn2.cab"

if (Test-Path $scancabPath) {
  Write-Host "Scanning start using $scancabPath ..."
  Copy-Item $scancabPath "$env:Temp\mywsusscn2.cab" -Force
  $scancabPath = "$env:Temp\mywsusscn2.cab"
  #pause
} else {
  Write-Host $scancabPath "not found. Nothing to do."
  #pause
  exit 1
}
$UpdateSession = New-Object -ComObject Microsoft.Update.Session
$UpdateServiceManager = New-Object -ComObject Microsoft.Update.ServiceManager
$UpdateService = $UpdateServiceManager.AddScanPackageService("Offline Sync Service", $scancabPath)
$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
Remove-Item $scancabPath
If ($SearchResult.Updates.Count -eq 0) {
  Write-Host "There are no applicable updates."
  #pause
  exit 0
}
Write-Host "List of applicable items on the machine when using wssuscan.cab:"
$results = @()
For ($i = 0; $i -lt $SearchResult.Updates.Count; $i++) {
  $update = $SearchResult.Updates.Item($i)
  Write-Host ($i + 1) "> " $update.Title
  $kbID = ""
  if ($update.Title -match 'KB\d{6,7}') {
    $kbID = $matches[0]
  }
  $results += [PSCustomObject]@{
    Title = $update.Title
    KBid = $kbID
    Support = "https://support.microsoft.com/kb/" + $kbID.Substring(2)
    Catalog = "https://catalog.update.microsoft.com/Search.aspx?q=" + $kbID
  }
}

$results | Export-Csv -Path $logPath -NoTypeInformation -Encoding UTF8
#pause
exit 0