Facebook, Instagram and Messenger appear to be down for users around the world.
The outage comes just weeks after a major outage for the company, which recently changed its name to Meta.
In October, all three apps stopped working for users, as well as the Meta-owned WhatsApp.
Thousands of outage reports were recorded by website health checker DownDetector, with users complaining of being unable to view, send or receive direct messages on Instagram.
Other users said they were unable to post on the app. Users in New York City, Los Angeles and Phoenix appeared to have problems with the apps,
The outage also apparently affected many users in Europe and other countries including Australia and Mexico.