Since yesterday around 1:00 pm EST, a friend of mine hasn't been able to join our realm. His character model loads in, but he is unable to be interacted with, and on his end, his screen is stuck on "Building Terrain," only to give him the "Unable to Connect to Realm" message.

I have seen some people report this recently, and those who responded saying it was a possible server outage. I don't think this is true, as for one, we all live in the same city. Moreover, I downloaded the world onto my computer and some of my friends could join, but he and another suddenly could not. I also asked him to join a different world of mine, which worked. Do note, we are all on Windows 10 Edition.