Update: Titanfall and Xbox Live are back online.
Xbox Live's service page is currently showing everything being back to normal.
Original story:
Xbox Live is currently running at a limited capacity, and games like Titanfall, among others, are down as a result.
Attempting to sign into Titanfall currently returns a The good news is both Microsoft and Respawn are aware of the issue and are working to get everything back up and running. Unfortunately, there is no immediate timeline for resolution at the moment.
The PC version of the game should be functioning normally.
For our Titanfall review, head here.
[Source: Xbox]
Our Take
Titanfall's downtimes have been reasonable, especially when compared to games like Grand Theft Auto V or Battlefield 4. Microsoft has been working hard to keep the servers alive. That being said, it doesn't make it any less disappointing that you can't play Titanfall right now. Hopefully it will be straightened out soon.