when i join my friend's world it freezes before joining the world with "connecting to...

This happened to us yesterday. I left the game and when I wanted to join again 5 minutes later I got the message 'Unable to connect to world.'. My friend was hosting her world on Xbox One with Minecraft v1.12.0, and I have the same version. Another friend
was also playing in that world from his pc and he didn't have any problems. Everything seemed fine besides that I couldn't join anymore. So then another friend tried to join as test but she couldn't join them either. We did some further testing and I could
join that last friend's world and she could join mine, and I could join the world of yet another friend, but no one was able to join the game I left.

The friend hosting the game didn't do anything besides playing the game. I had left a few times before and could always join again.

I wish the game would give more information beyond 'Unable to connect to world.'.

firstly check the game settings then check your privacy settings could be a issue with friends that have not added you as a friend not allowing them to join lastly check nat type settings and ask your friends to do the same.

Thank you for the reply.

My settings allow friends and friend of friends to connect.

As i said, when nobody is connected on my world, one person only can join.

Let me explain with an example :

I am in my world

Friend A tries to join my world : success

Friend B tries to join : failure.

Friend A disconnect himself

Friend B ties to join my world : success

Then, Friend A tries to join again : failure.

The problem is that only one person can join me, and nobody else can, no matter who it is.

We experience a complete freeze. When the account that freezes is hosting the world in splitscreen, all players and the world freeze.

When the account that freezes is the second player, not hosting the world, no one freezes.

When the account that freezes is hosting a world on xbox, and I join on my PC, only the xbox player freezes. I do not freeze on my PC, and the world does not freeze.

Hope this helps. Please let me know if you need anymore information.

I can only join my friends world when he invites me to his workd, but their world does not pop up when I go on the friends tab. They also have their world on friends only and he already has me added as a friend. All my other friends can join his world
except for me. The only way I can join is if they invite me. I need help with this pls

in experimenting, i am friends with 5 ppl on it, however i can only join/see the world when my gf has joined the world first.