Hi.

So my friend and I just started a realm. A problem occurs every time my friend tries to log on to the realm. He is automatically getting disconnected with the error:

"Connection Lost Internal Exception: java.io.IOException: An existing connection was forcibly closed by the remote host"

We've tried everything from Rebooting Minecraft, Pc's and the router, to Troubleshooting the game and changing the firewall.
The problem still occurs...