This post was updated at 1:45 p.m. PT
Facebook's app and website appear to be slowly coming back online after both went down for many users Monday afternoon -- the third outage for the social network in as many weeks.
It's not clear how many of Facebook's users were affected by the disruption, though it appeared to be widespread. A Facebook spokesperson told Mashable the source of the outage was “a configuration issue,” and that the company was working on getting Facebook’s services back online.
"We’re currently restoring Facebook services that people had trouble accessing earlier today due to a configuration issue. We’re working to bring things back to normal for everyone. We apologize to those who have been inconvenienced.”
While Facebook's website appeared to load very slowly for some users, the app and website were inaccessible to many Monday afternoon.
Facebook's platform status dashboard noted there was a "major outage" beginning at about 12 p.m PT. The dashboard monitors the performance of the Facebook Graph API, which is used by many developers that integrate their services with Facebook.
A message on the dashboard confirmed the issue Monday. "A Facebook-wide issue is causing the Facebook Graph API to be temporarily unavailable. We’re working with our core infrastructure teams to identify the issue and will update you when we have more information." Soon after, the performance dashboard also went down and was inaccessible.
The outage marks the third time the service has gone down in the last three weeks. The site previously experienced issues on Sept. 17 and Sept. 24. Monday's issues appeared to be more severe than those that caused the earlier disruptions.
Many took to Twitter to complain about the disruption, where the #FacebookDown hashtag began trending.
Just looked out of window and seen everyone is in the street showing each other what they're having for supper. #facebookdown— Jordan Stringfellow (@Jordan_Jud) September 28, 2015
How will I know who’s Birthday it is? Or who will invite me to play FarmVille? #FacebookDown— Comedy Photos (@RealPhotoBombs) September 28, 2015
People refreshing their FB page every 5 seconds to see if it's back up #facebookdown pic.twitter.com/GkAICXJUxk— BarDown (@BarDown) September 28, 2015
Have you tried turning it off and then back on Mark Zuckerberg? #facebookdown— Jordan Stringfellow (@Jordan_Jud) September 28, 2015