I can't join my friends minecraft world but I can join public server's.

Hi Jonah

Sorry to hear about that, however, do you have a companion app installed? If none, try to download it from here: https://apps.microsoft.com/store/detail/xbox-co...

Once done, sign in as usual, then click the cogwheel icon for Settings > Network > Kindly provide the results here.

If it's all good, try to check if you have any pending Windows updates and optional updates as well. You can also check your Microsoft Store app, click Library > Get Updates

Update: Microsoft's Minecraft support team didn't help much. To test this out, my and my friend set up a public mini game server, with my friend making a public Battle server. I joined from the "Join" tab, and it came up with the annoying "The connection to the server was lost. Exiting to main menu" error. My friend then disabled the option "Public Game." Then, if you join from the "Friends" tab it works just fine,

Guys why i can't join in world of my friends on Minecraft?

Guys why i can't join in world of my friends on Minecraft?

I am having the same problem, however, for me, it is my friend who is on the Xbox and I am on the Windows 10 version. He cant join the world that I created anymore. He can, however, join me if I create a new world and I can join any of his old
worlds. I Have a theory on what the problem is. We were playing the game fine one afternoon and we both had to get off for a bit to do other things. When I came back it said that my game was updated and some bugs were fixed. From then on my friend can't
join any previous worlds I created but he can join new ones. You will encounter a similar problem on the java edition of Minecraft if you try to connect to a server with a wrong client version. It appears as if the clients updated but the world it's self
did not which is why my friend can't join. That is my theory at least. I did what you said above and it and it still doesn't work.