Facebook and the company’s entire family of apps suffered an outage Monday morning. Shortly before 9 a.m. Pacific time, the social network’s namesake app, along with Instagram, WhatsApp, Facebook Messenger, and Oculus — Facebook’s virtual reality service — became unreachable for many people.

The outages appeared to be caused by a server configuration issue.

Facebook spokesperson Andy Stone tweeted that company is working to restore access to its apps. Instagram’s head Adam Mosseri tweeted that it “does feel like a snow day.”

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