When doing my research for 404 error pages, I was surprised to see that three quarters of the websites I visited did not have custom 404 error pages. These pages are designed to tell the end user that he or she is lost or has come across a page that no longer exists and thus guides them back to the homepage of the website that they were viewing. When doing my research for 404 error pages, I was surprised to see that three quarters of the websites I visited did not have custom 404 error pages. These pages are designed to tell the end user that he or she is lost or has come across a page that no longer exists and thus guides them back to the homepage of the website that they were viewing.