Stated DotNET requirement is v4.5.
author of https://github.com/hellzerg/optimizer wrote:Portable utility that helps you to restore your privacy and increase your security. Optimizer is recommended after a fresh, clean installation of Windows to achieve maximum privacy and security. Depending on your version of Windows, Optimizer will also allow you to perform some specific tweaks.
Optimizer latest release (currently v4.1, dated 2018-03-09) can be downloaded from https://github.com/hellzerg/optimizer/releases.