I also am having the same issue. No authentication. the computer in the upper right is red. Disconnected. I have made no changes other than a reboot. I have been able to connect to my server for the past 24 hours but cant for the past 2 or so. I can see that there are currently 2 playing on it. I am running the steam version of the game
Posts by Leftoverjay
The next update will be available on Wednesday, December 18, in the early evening (GMT+1).
This update will not yet replace the Java version, instead it is the actual content update. We'll provide more information about the transition together with the update.