Online outage tracker Down Detector logged several complaints from across the world including in India.
Facebook acknowledged on Wednesday an outage affecting users in various parts of the world and said it was working on a fix.
Problems appear to have started this afternoon, with Instagram, Facebook, WhatsApp, Oculus, and Messenger all experiencing issues.
Facebook, which has an estimated 2.3 billion monthly users, had problems uploading or sending images, videos and other files over the app.
Instagram has received more than 14,000 reported issues in the last 24 hours.
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Mostly, all Facebook, Instagram, and WhatsApp, also owned by Facebook Inc., are facing issues in uploading photos on the respective social networks. The site shows that all four Facebook-owned apps are now experiencing issues.
Facebook confirmed on Twitter that was working on restoring functionality to its applications.
Facebook appears to be down for thousands of people who aren't able to view their own photos, upload photos, or add albums to their personal accounts, groups, or pages. Users report that specific posts or photos don't show, but that the page might load.
DownDetector's live outage map shows a large number of reports on the east coast and in Europe.
When those problems happened in March, they were said to be perhaps the biggest outage in the history of the internet, hitting millions of people.