Facebook, Instagram, and WhatsApp were down from about 16:00 GMT until around 22:00 on the 4th of October.
According to a statement posted on Facebook’s website, the core of the issue lies in configuration changes on the backbone routers.
The routers coordinate network traffic between data centers and the aforementioned changes interrupted the communication. This had an avalanche effect and caused a huge outage.
The company does not suspect a hacker attack. It also has no evidence of compromised user data.
Facebook apologized to all affected by the issue. It reassured users that the employees are taking all measures necessary to return routers to regular operations.
According to Downdetector, around 10.6 million people globally reported problems connecting to Facebook-owned apps. According to statistics, however, the number could be higher, as said services have more than 3.5 billion users. In addition, people couldn’t access apps that required Facebook logins.
The issue also affected the virtual reality headset platform, Oculus.
As a result, most users flooded other social media and communication channels, such as Twitter, Reddit, and Discord.
The microblogging platform’s official account even made some lighthearted jokes about the situation.
hello literally everyone
— Twitter (@Twitter) October 4, 2021
The outage comes days after the Facebook files scandal, during which the Wall Street Journal published documents revealing the harmful effect of the social media giant.