This is arguably one of the most common and easily recognized forms of errors on the Internet and otherwise. The 404 Error represents a page or files not found an error, which pops up on the screen whenever the user wishes to load a file or visit a page that doesn’t actually exist. The most common reason behind this is when files are deleted unceremoniously or accidentally without updating the associated pages. Also, broken links, that is links which redirect to a page which no longer exists, often end up fetching the 404 error.