I have bought a Minecraft realm. I can connect perfectly every time however, my friend cannot connect. She is whitelisted, her internet is fine, she can play on other multiplayer servers but not on the realm.
Whenever she tries to join she gets a "Connection Lost: Internal Exception: java.io.IOException: An existing connection was forcibly closed by the remote host" error
I can see that she joins and then gets disconnected from the server in the game chat.
Thank you for your report!
This is a technical support issue, which we're already tracking in MC-38565, so I resolved and linked this ticket as a duplicate. We do not have the resources to provide you with technical support.
Please check that ticket for help with solving your issue. If you need further assistance, please contact Community Support, linked below.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki