New nether update login fail

Thank you for your report!
We're tracking this issue in MCPE-55815, so this ticket is being resolved and linked as a duplicate.

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We are still looking into the issue with player data changing or being lost at MCPE-55815.

If the issue is still occurring for you in the latest version (currently 1.16.1) please could you add any steps to reproduce the issue at MCPE-55815.

Also, if you have a copy of the world save available, you might like to share a copy of it for investigation.

• On Windows 10 you can use the Export world feature.
• On Android or iOS you need to use a file explorer to navigate to Device storage > games > com.mojang > minecraftWorlds
• On Xbox or Switch the only way is to upload it to a Realm, and then download the world on Windows 10 or Android/iOS. (Please do not purchase a Realms subscription just to provide a world to us - but if you have a Realm already this may be a viable option if you wish to do so.)

If the world is larger than 10MB you can upload the world to OneDrive or a similar file sharing site, and then share the link in a comment at the main bug ticket at MCPE-55815.

Thank you for your help, and for your patience while we look into this bug.

Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki