The is the glue that connects Unreal Engine 4 games to your Windows OS. It automates the tedious process of installing various Microsoft libraries so you can get straight to gaming or developing. If you encounter an error, a simple "Repair" of your C++ Redistributables or a manual run of the file usually solves the problem.
The primary function of ue4prereqsetup-x64.exe is to: ue4prereqsetup-x64.exe
: Provides the libraries needed for games written in the C++ language. It typically includes versions from 2010, 2012, and 2013. The is the glue that connects Unreal Engine