install_windows_updates.ps1

Function Install-PSWindowsUpdate {

  $webDeployURL="https://gallery.technet.microsoft.com/scriptcenter/2d191bcd-3308-4edd-9de2-88dff796b0bc/file/41459/43/PSWindowsUpdate.zip"
  $zipPath="$($env:USERPROFILE)\Downloads\PSWindowsUpdate.zip"
  $targetDir="C:\Windows\System32\WindowsPowerShell\v1.0\Modules\"
  $explorerExe = "$env:windir\explorer.exe"
  $FileExists = Test-Path $explorerExe

  Write-Output "Starting PSWindowsUpdate module installation`n"

  (New-Object System.Net.WebClient).DownloadFile($webDeployURL, $zipPath)

  If ($FileExists -eq $False) {
    Write-Output "We have Identified your OS as Server Core`n"
    [System.Reflection.Assembly]::LoadWithPartialName("System.IO.Compression.FileSystem") > $null
    [System.IO.Compression.ZipFile]::ExtractToDirectory($zipPath, $targetDir)
  }
  Else {
    Write-Output "We have Identified your OS as Server with graphical UI`n"
    $shell = new-object -com shell.application
    $zipFile = $shell.NameSpace($zipPath)
    $destinationFolder = $shell.NameSpace($targetDir)
    $copyFlags = 0x00
    $copyFlags += 0x04 # Hide progress dialogs
    $copyFlags += 0x10 # Overwrite existing files
    $destinationFolder.CopyHere($zipFile.Items(), $copyFlags)
  }

  Write-Output "Ended PSWindowsUpdate Installation`n"
}

Function Install-Updates {
  Write-Output "Starting Windows updates installation. This may takes a lot of time...`n"

  Import-Module PSWindowsUpdate
  Add-WUServiceManager -ServiceID 7971f918-a847-4430-9279-4a52d1efe18d -Confirm:$false > $null
  Get-WUInstall -WindowsUpdate -AcceptAll -UpdateType Software -IgnoreReboot | Out-File C:\PSWindowsUpdate.log
  #Get-WUInstall -UpdateType Software -KBArticleID KB2939087 -AcceptAll -IgnoreReboot | Out-File C:\PSWindowsUpdate.log

  Write-Output "Ended Windows updates installation."
}

If ((Get-Module -ListAvailable -Name PSWindowsUpdate) -ne $null) {
  Write-Output "PSWindowsUpdate module is installed. Skipping installation.`n"
}
Else {
  Install-PSWindowsUpdate
}

Install-Updates