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Facebook has been down for some users for nearly a full day.
The social network has been having issues since around 9 a.m. PT Wednesday, according to tracking site Down Detecter. At time of publishing, 21 hours later, many users have regained full access, but Facebook still hasn’t given the all clear.
When reached for comment on Thursday, a Facebook representative said they had nothing to add beyond the company’s statement from Wednesday.
“We’re aware that some people are currently having trouble accessing the Facebook family of apps,” a Facebook spokesperson said in an email. “We’re working to resolve the issue as soon as possible.”
Instagram was also down for many hours, starting at around the same time. However, Instagram’s official Twitter account announced the platform was back in action 9:41 p.m. PT time. Facebook’s official Twitter account has given no such update.
Users throughout the day posted on Twitter that they’re seeing a message saying Facebook is “down for maintenance.” Other users trying to post status updates on Facebook, including CNET staff, got error messages saying “something went wrong.”
The outage affected users in the US, Europe, South America, Australia and Asia, according to a map by Down Detector. Users of Facebook-owned WhatsApp also reported they were having trouble sending photos on the app. Virtual reality company Oculus, which is owned by Facebook, also reported that its users were having trouble accessing and using its platform.
Facebook, which makes money from selling ads, was having issues with its ad products as well.
Facebook hasn’t revealed what caused the outage, but it said in a tweet Wednesday that it wasn’t because of a cyberattack known as a distributed denial-of-service () attack where hackers try to crash a site by flooding it with too much traffic.
This isn’t Facebook’s first outage. In November the social network went down in a mishap caused by a test the company was running. That outage lasted about 40 minutes. That same month, Facebook and Instagram were down for because of what Facebook said was a server configuration. This is, however, the longest outage in Facebook’s history. The previous record-holding outage occurred in 2008, when Facebook had just 125 million users.
Originally published March 13, 10:22 a.m. PT.
Updates, 10:46 a.m.: Adds comment from Facebook; 12:18 p.m.: Adds tweets from Facebook; 1:23 p.m.: Adds background on what areas were affected and WhatsApp; 5:06 p.m.: Adds the length of the outage and information about WhatsApp. 11:19 p.m.: Adds Instagram tweet, length of Facebook’s outage.
Update, March 14: Notes that Facebook still hasn’t said if the outage is over for all users.