I’m on the latest version for bedrock Nintendo switch and I’m having this problem right now. I played without an issue for around 5 hours last night. I just decided to go ahead and buy a realm and import the world I was working on into the realm, and now I get the error “We tried to sign you into your Microsoft Account, but something went wrong.” If I go right to the realms page it loads and then shows me the loading background image frozen, then tells me “you’ve been disconnected from the server.” Reimporting the world does not work. I’m frustrated because I just spent money on a realm and only now I can’t connect to it. Internet is fine in other switch games and on my PC/consoles.
Another update. I got together with a friend to test my realm, he is able to join and the world works perfectly fine until I try and join. When I try and join he gets kicked and is unable to join, and I still haven’t been able to get in successfully. We tried this on a completely different WiFi setup/network to make sure it wasn’t anything with my router but the same results occurred on my end.