Far Cry 4's online services are currently unavailable as we perform emergency maintenance. The expected downtime is approximately 45 minutes. The solo campaign will still be available however you will not be able to connect to any online features at this time.
We'll update you with more information as it becomes available.
Sincerely,
-Far Cry 4 Communtiy Team.
UPDATE: 12:45AM EST
The maintenance is now complete, and all online features should be available. Thank you for you patience!