Unable to join friends world

What happens exactly when you try to join your friend's world?

When i join my friends world a message says "unable to connect to world" this has been happening since version 1.16.201.3

Thank you for your report!
We're tracking this issue in MCPE-36190, so this ticket is being resolved and linked as a duplicate.

If you would like to add a vote and any extra information to the main ticket it would be appreciated.

If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.

Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki