Facebook explains the reason for widespread disruption in blog posts

Facebook released a brief blog post Monday night, attributing the massive global outage that took its services and internal communications tools offline for several hours to a “defective configuration change” to its routers.

“Configuration changes on the backbone routers that coordinate network traffic between our data centers caused problems that disrupted this communication. This disruption of network traffic had a cascading effect on the way our data centers communicate and halted our services,” Facebook Vice President of Infrastructure wrote Santosh Janardhan in the post.

“The underlying cause of this disruption also affected many of the internal tools and systems we use in our day-to-day operations, complicating our attempts to quickly diagnose and resolve the issue,” Janardhan added.

Facebook said it had no “evidence that user data was being compromised as a result of this downtime.”

The post confirmed that Facebook’s services are “back online” and apologized for the inconvenience.

The outage affected Facebook and all of its most widespread apps, including Instagram, WhatsApp and Messenger.

Some services appeared to be back online for some users around 18.00 ET.

Meanwhile, the disruption created chaos for platforms and companies that depend on the platforms, users from around the world and shareholders including CEO Mark Zuckerberg.

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