Sometimes when you try to visit web page, you’re met with an HTTP error message. It’s a message from the web server that something went wrong. In some cases it could be a mistake you made, but often it’s the site’s fault.

Each type of error has an HTTP error code dedicated to it. For example, if you try to access a non-existing page on a website, you will be met by the familiar 404 error.

Now, you might wonder, which are the most common HTTP errors that people encounter when they surf the Web? That is the question we’ll answer in this article.

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People trying to access Apple’s Mobile Me by going directly to the me.com domain yesterday were met by a 404 HTTP error response and a white screen with a single text message on it: “Not Found: Resource does not exist.”

Accessing me.com/mail worked, but anyone typing in www.me.com or me.com got the error page mentioned above and was not redirected to the login page (which is what is supposed to happen).

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When you end up following a dead or incorrect link or mistype a URL, you are likely to end up on a 404 error page. It doesn’t have to be a bad experience, though. We have prowled the web for funny and original takes on this classic error page. Here are 17 of the best. [...]

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The American Express homepage (home.americanexpress.com) was unavailable for over five hours today. During that entire time the page responded with an HTTP 404 error (page not found). Visitors to the homepage were met by a simple text message: “File not found.” The problem lasted from 05:47 a.m. to 10:52 a.m. Central European Time (11:47 p.m. [...]

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The top 100 websites in the US count their visitor numbers in the millions. They need to care about every aspect of their website to handle (and take advantage of) all that traffic, which includes handling those users who sometimes end up on non-existing pages either by accident or because of an error. This means [...]

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We realized that it might be interesting to have a record of what the 404 error campaign looked like and ”behaved” even after it is gone. In other words, a video… So here it is, for your viewing pleasure and with a little bit of help from YouTube: Above: This is our first YouTube video! [...]

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If you have visited the Pingdom homepage in the last few days, you have seen a 404 error message instead of our regular homepage. However, it is actually a campaign where we have changed the error message from “404 page not found” to “404 price not found” (see the image below). We thought this was [...]

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We have just launched a campaign on the Pingdom website. Why do people use uptime monitoring? A huge reason is to know if there is a problem with their websites or servers. No one is immune against downtime, but sometimes it can be hard to explain the point of using uptime monitoring in a simple [...]

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Whenever you try to access a web page that doesn’t exist on the web server you get a 404 error page. You’ve all seen the standard 404 “page not found” message a thousand times by now, and it gets old real fast. So, wouldn’t it be nice if that error page was a little more [...]

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The HTTP status code 404 means that a web page could not be found on the server. This is normally a bad thing. No webmaster wants to see this when accessing his/her own website. So, considering we are in the uptime business, trying to banish as many of these 404 messages as we possibly can [...]

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