As soon as I open my Minecraft Pocket Edition and try to sign in via Xbox Live, the game closes. I updated it to the latest version and did other things I read. But it still doesn't work.
Linked issues
Comments 1

As soon as I open my Minecraft Pocket Edition and try to sign in via Xbox Live, the game closes. I updated it to the latest version and did other things I read. But it still doesn't work.
migrated
(Unassigned)
Unconfirmed
Android
Android 8.0.0
1.16.100
Retrieved
Thank you for your report!
We're actually already tracking this issue at MCPE-100100, so I will resolve and link this ticket 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