Open Minecraft
Select the same edition and version on all devices
Sign in to your Microsoft account
Add each other as friends
Make sure everyone is online
Join a friend’s world from the Friends tab
Create a new world and set Multiplayer to On
Set the world to Friends Only or Invite Only
Invite friends to your world
For LAN play, make sure all players are on the same local network
For Java Edition, join the same server
For Bedrock Edition, use a Realm, server, or invite-based world
Check that firewalls and network settings allow multiplayer
Make sure all players have a stable internet connection