On Samsung Galaxy Tab 6:

I could not sign in on the Pocket Edition for this device.
It went to sign in but returned the message "We tired to sign you in to you Xbox Live account but something went wrong."

There was no reporting of what the error was (connection? authentication?). I remembered that I changed my password on Xbox Live through a browser. The bug is that the software should automatically recognize that the authentication failed and then let me enter a new password. I fixed it by force stopping the app and hitting "clear data" through /settings/Applications.

After reboot, the sign in gave the proper response to a failed authentication and let me enter the new password. I am now signed in.

Please fix this so authentication failures have the proper response by default.

Thanks.