Facebook’s apps and services – including Instagram and WhatsApp – are coming back online six hours after an outage.
The platforms crashed earlier on Monday, with users unable to send or receive messages or refresh their news feeds.
Facebook’s chief technology officer, Mike Schroepfer, had blamed the outage on “networking issues” but just before midnight, he confirmed: “Facebook services coming back online now – may take some time to get to 100%. To every small and large business, family, and individual who depends on us, I’m sorry.”
Facebook Engineering wrote on Twitter (which was not affected by the outage): “To the huge community of people and businesses around the world who depend on us: we’re sorry.
“We’ve been working hard to restore access to our apps and services and are happy to report they are coming back online now. Thank you for bearing with us.”
According to Downdetector, which collects status reports on the services:
• There were more than 58,219 reports of problems with Facebook – 71% regarding its website and 17% for the app
• More than 30,000 reports were recorded at the peak of problems with Instagram – more than half of those were issues with the app
• Problems were reported across the world, including in North and South America, Europe, Australia, Russia, and New Zealand
People using their Facebook credentials to log in to third-party apps such as Pokemon Go and Match Masters were also said to be facing issues.
Shares of Facebook, which has nearly 2 billion daily active users, closed 4.9% lower on Monday, wiping $47bn (£34.5bn) off its market value.
It comes as the company was also under pressure from the testimony of a whistleblower, who claims it chose “profit over safety”.
Security experts tracking the situation said the disruption could be the result of an internal mistake, although sabotage by an insider would be theoretically possible.
Jonathan Zittrain, director of Harvard’s Berkman Klein Center for Internet & Society, described the situation by tweeting: “Facebook basically locked its keys in its car”.
Reuters news agency reported Facebook employees – who were not identified – as saying they believed the problems were caused by an internal routing mistake to an internet domain.
This was compounded by the failures of internal communication tools and other resources that depend on that domain to work.
A similar issue with the three apps was recorded in April 2019, when they crashed for around two hours before returning to normal.