After nearly 6 hours of outage, the social media giant Facebook is back in business along with Instagram, WhatsApp, and Messenger.

Facebook issued an explanation for the outage on Monday evening, saying that it was due to a configuration issue. The company says it doesn’t believe any user data was impacted.

The outage started just before noon ET on Monday. It was the most significant outage for Facebook since a 2019 incident took its site offline for more than 24 hours.

Journalist Brian Krebs cites a trusted source who told him the incident didn’t have any malicious origins. Instead, they said it started with a routine BGP update that went wrong, wiping out the DNS routing information that Facebook needs so that other networks can find its sites.

Facebook engineers have been sent to the company’s US data centers to try and fix the problem, according to two people familiar with the situation. That meant the outage, already Facebook’s most severe in years could be further prolonged.


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