The problem was at first latent ... when trying to connect from the Windows platform in the world generated by friends Xbox One platform the error always occurred, however occasionally reversing the attempt my friends managed to enter my world. But today, as of April / 2021, we are no longer able to play together in multiplayer.

We have already changed account privacies, worlds resources, we have created test worlds, we tried per server, we have changed multiplayer privacy, but nothing has resolved ... the error "Could not connect to the world" persists ...