Some users began to see Facebook return to normal about 30 minutes after the outage began.
This error message popped up when we tried to get on Facebook.
The incident saw Facebook's share price drop before recovering slightly.
Several subscribers took to Twitter on Monday afternoon to complain that they could not log into their account.
Marvel's real life hero Stan Lee has died, aged 95
Stan Lee is a man whose popularity transcends the company Marvel Comics , who he wrote for and later headed before stepping down. Eventually, Lee moved up to become a text filler for the actual comics, co-creating his first ever hero, The Destroyer.
If you've been unable to post or view content on Facebook since about noon Monday, you're not alone.
Here's the message users receive when they try to visit Facebook on November 12, 2018, at around 1 p.m. ET.
The outage knocked out Facebook's main website for some users and made using Facebook Messenger hard. Instagram appears to be running fine. The company has not commented on what led to the outage. The social media giant was reporting outages all over Canada and the United States. A look at the real-time outage map on Down Detector suggests the social network is down for a large chunk of the USA, especially along the eastern seaboard.