So, how does a player join another's private world? They can join friends on Minecraft Pocket Edition and Bedrock, hop on a LAN server (Java), or connect to a realm. Here's an overview of what is ...

This post shows a few possible solutions to deal with the Minecraft failed attempt to join realm error on Windows 10.

One of the problems encountered by some people when playing Minecraft on a Windows computer is the error that says, “Failed attempting to join the realm.