Approximately two hours prior to reporting this I was suddenly disconnected from a Realm that I own and pay for on Xbox One X. Upon multiple attempts to reconnect I was presented with the message:

"Unable to Connect to the world. Please check your connection to the internet and try again."

My internet connection is working, I was watching a YouTube video at the same time on my laptop and I can play other games online with/against other players.

Any help in resolving this issue would be appreciated, thanks.