When you see a 404 Not Found error, it simply means that your computer is trying to access information on a page that either is broken or no longer exists.
The most common scenario when you'll see a 404 Not Found error is when the web page you’re looking for was deleted from the website. So maybe that list of apartments you’re trying to check out doesn’t exist anymore. Or maybe someone already adopted that particular cat. If you’re receiving this error when about to access a page, it was most likely deleted.
Another reason could be that you entered the wrong link address. Are you sure you typed in the right website with the correct number of Ws and spelled everything correctly? Maybe you’re seeing this error simply because somebody’s website spells Carrie with a “K.”
It’s important to note that a 404 Not Found error can occur on any browser on any computer system. Whether it’s Google, Yahoo, FireFox, or Safari, there's a chance you’ll run into this error somewhere.
Also keep in mind that sometimes it’s not your fault. Sure, you could’ve typed the URL wrong. But if the domain name simply doesn’t exist anymore, then there’s really not much you can do about it. If you’re looking for specific information, try searching for it without typing the domain. Maybe the information still exists but was moved to a different page. You’ll never know until you look.