Why suddenly Facebook and Instagram stopped worldwide?

The Social Networking Site Facebook Wednesday closed for a short time. When Facebook was blocked, neither the user could upload a photo, nor to update a status.
Facebook’s mobile and desktop were both floors down. Facebook not only photo sharing app installs also stopped. However shortly afterwards, Facebook and Instagram came to an undone and people could be able to run.

While Facebook was down, the page of some users did not upload, and others were not able to enter their account. Looking for a Facebook login, a message was found to be down on Facebook for necessary repair and in the first few minutes to come and run.
Facebook’s news on Twitter became viral after Facebook was down. Talking to Facebook was so tweeted that #facebookdown was successful in the Hansetag’s Top Trends.