FACEBOOK appears to have been hit by a serious outage.

Many users are reporting that they are unable to access the social networking site, or pages are not displaying correctly.

Many users are met with the following message when trying to access the site.

Downdetector, which collates website and communications outages shows a large spike in people reporting problems within the last hour.

The problem appears to be affecting users in Europe.

However, other users appear to be unaffected.

Simply hold the shift key (the one that looks like an upwards arrow) and click the refresh button on your browser.

This is known as a 'hard refresh' and forces the browser to clear the computer's cache and load the most recent version of the page.