Customers across the world had been unable to upload or view images, videos, and other files.
The issues had affected its Facebook, Messenger, Instagram, and WhatsApp apps.
“The issue has… been resolved, and we must be back at 100% for everyone,” it tweeted. It added that an unspecified situation had been accidentally “triggered” throughout “routine maintenance.”
Facebook has more than – 2.3 billion monthly active users, and Instagram has one billion.
In some instances, users had been proven grey bins annotated with textual content explaining what the firm’s picture analysis software had advised being the contents of the original photos.
Rival platform Twitter also had points, with some customers not capable of sending direct messages or receive notifications for a time.
The company apologized for the inconvenience, tweeting at about 23:00 BST: “We’re virtually at 100% resolved. There could also be some residual results for a small group of people; however, total your DMs must be working properly now. We appreciate your patience!”
In March, Facebook and Instagram suffered their most extended period of disruption ever. Issues additionally struck each app in addition to WhatsApp in April.
The most recent issues followed earlier disruption on Tuesday when Cloudflare – an organization that gives internet security to web site operators – suffered a fault of its own that prompted 1000’s of websites to display “502 errors” when visited. The US firm has since revealed a blog blaming a flawed software deployment.
“Our testing processes had been insufficient in this case, and we’re reviewing and making modifications to our testing and deployment process to avoid incidents like this in the future,” it said.