Streaming behemoth YouTube appears to have crashed for thousands of users around the world.
Complaints registered on independent site DownDetector indicate the outage is global, but the source of the issue remains unknown.
The Google-owned site is usually very reliable and the scale of the outage is currently unknown.
The site seems to be suffering a universal loss in functionality, with issues loading the homepage, playing videos and logging in.
The lack of service started shortly after midday the number of complaints sooned soared into the thousands.
More than two billion people log on to YouTube every month, and it is often cited as being the second most popular website in the world, behind only its parent company, Google.
More than one billion hours of content is watched every day, according to YouTube.
Disgruntled users took to social media to double check the site was out of order and bemoan the outage.
Some shared screenshots of their defunct YouTube landing screen while others resorted to memes and GIFs.
