Just Install SP1. And of course, if you don’t have SP1 installed and can’t have VS 2015 or 2017 installed, you’ll have missing DLLS because Unreal Engine search some dlls at folders like : UnrealEngineFolder\Engine\Binaries\ThirdParty\PhysX\PhysX-3.4\Bin\Win{32 or 64}*VS{2013 or 2015 or 2017}*\ and use Visual Studio to compile some code and build your game (making a shipping version for example).