Hi! I`ve got an specific bug "Bat" via trying to enter in Minecraft Win10 edition. During searching this bug at microsoft support portal the answer was to report this bug to developer/game support and then my account will be fixed on game servers.
Put the summary of the bug you're having here

What I expected to happen was...:
I Should Sign In W10 version.

What actually happened was...:
Error: Bat
Can`t sign in, game plays local only.