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Facebook platform users hit Twitter with #facebookdown Wednesday, after losing access to Facebook, Instagram and Messenger across the world. Wochit, USA TODAY

After being out much of Wednesday, Facebook began to come back to life early Thursday after midnight ET for many users.

The outage is one of the longest the massively popular social network has ever experienced in its 15 years.

started having problems at around noon Eastern time, with issues popping up across Facebook proper, Facebook Messenger and Instagram around the world.

Some users of Facebook-owned WhatsApp reported having issues sending photos on the popular messaging app.

It was not immediately clear what caused Wednesday’s issue. Some users reported seeing a message