Facebook's giant outage: This change caused all the problems | WHAT REALLY HAPPENED X-Frame-Options: SAMEORIGIN

Facebook's giant outage: This change caused all the problems

Facebook blamed its six-hour outage on Monday on a faulty configuration change that affected its vast social media platforms and internal systems.

Facebook, alongside WhatsApp and Instagram, suffered a global outage on Monday, October 4 that began at approximately 11:44 EDT and dragged on well into the afternoon.

The social media giant's services were back online as of 17:28 EDT.

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In a subsequent blog post, Facebook's VP of infrastructure, Santosh Janardhan, said the outage had been caused by a technical issue affecting its Border Gateway Protocol (BCP) routing system, which had "a cascading effect on the way our data centers communicate, bringing our services to a halt."

Monday's outage also affected internal tools at Facebook that made diagnosing and fixing the problem more difficult, said Janardhan. According to the New York Times, the outage rendered engineers' access cards useless, meaning staff couldn't get into the buildings where the affected servers were housed.