I'm guessing that this will turn out to be the well-known Installer Detection, around since the time of Windows NT 6.0. * https://technet.microsoft.com/en-gb/l

I'm guessing that this will turn out to be the well-known Installer Detection, around since the time of Windows NT 6.0. * https://technet.microsoft.com/en-gb/library/cc709628(v=ws.10).aspx https://technet.microsoft.com/en-gb/library/cc709628(v=ws.10... * https://blogs.msdn.microsoft.com/uac/2006/01/13/identification-of-administrative-applications/ https://blogs.msdn.microsoft.com/uac/2006/01/13/identificati...