https://techcrunch.com/2018/03/08/oculus-issues-patch-to-bring-rift-vr-headsets-back-to-life-after-catastrophic-shutdown/

Facebook’s Oculus suffered a prolonged, embarrassing outage yesterday because someone at the company forgot to update a certificate which expired and plunged the company’s network of Oculus Rifts into darkness.

For nearly the entire day, users were unable to jump into VR. For gamers it was an annoyance, but with more and more companies looking to experiment with integrating virtual reality into their workflows, it was a major oversight.