$NetFx4ClientUrl = 'http://download.microsoft.com/download/5/6/2/562A10F9-C9F4-4313-A044-9C94E0A8FAC8/dotNetFx40_Client_x86_x64.exe'
$NetFx4FullUrl = 'http://download.microsoft.com/download/9/5/A/95A9616B-7A37-4AF6-BC36-D6EA96C8DAAE/dotNetFx40_Full_x86_x64.exe'
$NetFx4Path = 'c:\vagrantshared\resources\NetFx4'
$NetFx4InstallerFile = 'dotNetFx40.exe'
$NetFx4Installer = Join-Path $NetFx4Path $NetFx4InstallerFile

function Is64Bit {  [IntPtr]::Size -eq 8  }

function Enable-Net40 {
  if(Is64Bit) {$fx="framework64"} else {$fx="framework"}
  if(!(test-path "$env:windir\Microsoft.Net\$fx\v4.0.30319")) {
    if (!(Test-Path $NetFx4Path)) {
      Write-Host "Creating folder `'$NetFx4Path`'"
      $null = New-Item -Path "$NetFx4Path" -ItemType Directory
    }

    if (!(Test-Path $NetFx4Installer)) {
      Write-Host "Downloading `'$NetFx4ClientUrl`' to `'$NetFx4Installer`'"
      (New-Object Net.WebClient).DownloadFile("$NetFx4ClientUrl","$NetFx4Installer")
    }

    $psi = New-Object System.Diagnostics.ProcessStartInfo
    $psi.WorkingDirectory = "$NetFx4Path"
    $psi.FileName = "$NetFx4InstallerFile"
    $psi.Arguments = "/q /norestart /repair /log `'$NetFx4Path\NetFx4Install.log`'"
    #$psi.WindowStyle = [System.Diagnostics.ProcessWindowStyle]::Minimized;

    Write-Host "Installing `'$NetFx4Installer`'"
    $s = [System.Diagnostics.Process]::Start($psi);
    $s.WaitForExit();
    # if ($s.ExitCode -ne 0) {
    #   Write-Error ".NET Framework install failed with exit code `'$($s.ExitCode)`'."
    # }
  }
}

Enable-Net40