Warner Bros. Interactive has confirmed it will be shutting down the online multiplayer servers for Batman: Arkham Origins on December 4th. It’s likely due to the cost of maintaining the server outweighing the size of the community still active on the game, if there is much at all three years after Arkham Origins originally released. Origins feels like the often ignored entry of the Arkham series, not even being part of the Return To Arkham Collection that released on PS4 and Xbox One.
As of December 4, 2016, the online services portion of Batman: Arkham Origins will be retired We thank those that have joined us to battle over the last 3 years. The Single player campaign may still be played and enjoyed offline. For any questions relating to Batman: Arkham Origins, please contact WB Games customer service http://support.wbgames.com/
So if you fancy checking out the multiplayer one more time you have two weeks until shutdown.
Source: Warner Bros