Colwyn Johnson

I fixed this issue too, or I seem to have. It turns out I had a faulty motherboard and replaced it and it worked just fine. For reference, it was specifically the ethernet port on the back had gone bad, I could still use the internet and connect to servers and such but it must not have been a strong enough connection for Realms and it shut me out. Since replacing the Motherboard I am able to connect and receive packets from the server as normal (I made comparative screenshots and before I was receiving none). My fix might only be specific to me, and it did end up being technical. Thought I should post here since it may be the same for others too, 

TL;DR check your internet download speed, as it may not be high enough for realms to be able to communicate with you. 

Sorry for the duplicate, I'll go to the other posting for support