## URL for Windows 10
If ( ([System.Environment]::OSVersion.Version).Major -ge 10 )
{ $URL = 'https://swupdate.openvpn.org/community/releases/openvpn-install-2.4.7-I607-Win10.exe' }

## URL for Windows 7
ElseIf ( (([System.Environment]::OSVersion.Version).Major -ge 7) -and (([System.Environment]::OSVersion.Version).Major -lt 10) )
{ $URL = 'https://swupdate.openvpn.org/community/releases/openvpn-install-2.4.7-I607-Win7.exe' }

## Set the local filename
$FILE = '{0}\{1}' -f $Env:TEMP,(Split-Path $URL -Leaf)

## Remove previous package
If ( Test-Path $FILE ) { Remove-Item -Path $FILE -Force | Out-Null}

## Download installer
Write-Output "Downloading: ${URL}"
Try { (New-Object System.Net.WebClient).DownloadFile($URL, $FILE) }
Catch { Write-Output $_.Exception.Message }

## Install package
Write-Output "Installing: ${FILE}"
Try { Start-Process -FilePath $FILE -ArgumentList "/S" -Wait }
Catch { $_.Exception.Message }

## Delete installer package
If ( Test-Path $FILE )
{
    Write-Output "Deleting ${FILE}"
    Try { Remove-Item -Path $FILE -Force }
    Catch { Write-Output $_.Exception.Message }
}