I have a OS Windows Server 2016, and i have to install a program with the framework 3.5, the problem comes when i try to install the framework cause give an error in the Server Manager, i try to uninstall the framework 4.6 (is unique installed right now) but also appear the mensage of error in the server manager, i try to make it with the windows update and when is trying to install it also appears the error, i try to install it or unistall it using the Power Shell, but that give an error too, i dont know what else can do to install the framework 3.5