I deal with this super annoying and frustrating issue daily, actually multiple times daily. I just bought the Nintendo Switch online service too. We are typically able to connect to the remote servers without too many issues, but when my kids try to do the multiplayer where one creates a map and wants to invite the other into the same map to play together, that's where the chaos starts. The resolution is usually to perform these steps on both Switches:
Reboot Minecraft app
This usually tries to sign in with the Nintendo/Microsoft account, and it appears to work, but it actually doesn't. It still gives errors like "Can't connect to Realms", etc. and the switches are not communicating very well. After I see it acting like this, I do the next thing...
Go into settings, log out of the Nintendo/Microsoft account, clear the login info, sign back in, which results in needing to do the whole aka.ms/remoteconnect dance for each of the Switches. They both are using their own separate Nintendo/Microsoft accounts, and connected through a Nintendo Online family plan.
After all that across both the devices, they can usually create/invite each other to their games.
I've never had luck getting the local network play to work either.
Joshua Boltz
I deal with this super annoying and frustrating issue daily, actually multiple times daily. I just bought the Nintendo Switch online service too. We are typically able to connect to the remote servers without too many issues, but when my kids try to do the multiplayer where one creates a map and wants to invite the other into the same map to play together, that's where the chaos starts. The resolution is usually to perform these steps on both Switches:
Reboot Minecraft app
This usually tries to sign in with the Nintendo/Microsoft account, and it appears to work, but it actually doesn't. It still gives errors like "Can't connect to Realms", etc. and the switches are not communicating very well. After I see it acting like this, I do the next thing...
Go into settings, log out of the Nintendo/Microsoft account, clear the login info, sign back in, which results in needing to do the whole aka.ms/remoteconnect dance for each of the Switches. They both are using their own separate Nintendo/Microsoft accounts, and connected through a Nintendo Online family plan.
After all that across both the devices, they can usually create/invite each other to their games.
I've never had luck getting the local network play to work either.