Some errors when I try to include Netwroking.h

I trying to replicate Rama’s tutorial for the implementation of Sockets and I have this problem.
When I try to include Networking.h generate a lot of errors in different files. I don’t know if something from VS 2017 configuration or another thing.

With newer versions the header is just #include “Networking.h”. Also did you add OnlineSubsystem to your Build.cs file