404 Error Page Meaning
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Status codes 301 Moved Permanently 302 Found 303 See Other 403 Forbidden 404 Not Found 451 Unavailable For Legal Reasons v t e The 404 or Not Found error message is a Hypertext Transfer Protocol (HTTP) standard response code, in 404 error message computer network communications, to indicate that the client was able to communicate with a given
Status 404 Error
server, but the server could not find what was requested. The web site hosting server will typically generate a "404 Not Found" http 404 page web page when a user attempts to follow a broken or dead link; hence the 404 error is one of the most recognizable errors encountered on the World Wide Web. Contents 1 Overview 2 Custom error pages
Error Code 404 Not Found
2.1 Tracking/Checking 404 errors 3 Phony 404 errors 4 404 substatus error codes defined by IIS 4.1 Slang usage 5 See also 6 References 7 External links Overview[edit] When communicating via HTTP, a server is required to respond to a request, such as a web browser request for a web page, with a numeric response code and an optional, mandatory, or disallowed (based upon the status code) message. In the code 404, the first 404 not found digit indicates a client error, such as a mistyped Uniform Resource Locator (URL). The following two digits indicate the specific error encountered. HTTP's use of three-digit codes is similar to the use of such codes in earlier protocols such as FTP and NNTP. At the HTTP level, a 404 response code is followed by a human-readable "reason phrase". The HTTP specification suggests the phrase "Not Found"[1] and many web servers by default issue an HTML page that includes both the 404 code and the "Not Found" phrase. A 404 error is often returned when pages have been moved or deleted. In the first case, it is better to employ URL mapping or URL redirection by returning a 301 Moved Permanently response, which can be configured in most server configuration files, or through URL rewriting; in the second case, a 410 Gone should be returned. Because these two options require special server configuration, most websites do not make use of them. 404 errors should not be confused with DNS errors, which appear when the given URL refers to a server name that does not exist. A 404 error indicates that the server itself was found, but that the server was not able to retrieve the requested page. Custom error pages[edit] The Wikimedia 404 message Web servers can typically be configured to display
asks for a page that’s simply not available on your site. The reason for this is that there may be a link on
404 Not Found Website
your site that was wrong or the page might have been recently
404 Fault
removed from the site. As there is no web page to display, the web server sends a page that what is http status 404 simply says "404 Page not found". The 404 error message is an HTTP (Hypertext Transfer Protocol) standard status code. This "Not Found" response code indicates that although the client could communicate https://en.wikipedia.org/wiki/HTTP_404 to the server, the server could not find what was requested or it was configured not to fulfill the request. The 404 "Not Found" error is not the same as the "Server Not Found" error which you see whenever a connection to the destination server could not be established at all. The default 404 error page as shown on Internet Explorer is http://www.404errorpages.com/ given below. HTTP Status Code Whenever you visit a web page, your computer will request data from a server through HTTP. Even before the requested page is displayed in your browser, the web server will send the HTTP header that has the status code. The status code provides information about the status of the request. A normal web page gets the status code as 200. But we do not see this as the server proceeds to send the contents of the page. It’s only when there is an error, we see the status code 404 Not Found. Origin of Status Codes As a part of the HTTP 0.9 specifications, the World Wide Web Consortium (W3C) established HTTP status codes in 1992. Tim Berners-Lee, who invented the web and the first web browser in 1990, defined the status codes. List of Status Codes A brief overview of HTTP status codes is given below. Code Meaning Description 100 Continue Confirms the client about the arrival of the first part of the request and informs to continue with the rest of the request or ignore
Consumer Technology Internet acronyms and lingo 404 (status code) Definition 404 (status code) Facebook Like Tweet Google +1 LinkedIn Email Comment RSS Print A AA AAA Part of http://whatis.techtarget.com/definition/404-status-code the Internet acronyms and lingo glossary: Also see errors . 404 is a frequently-seen status https://www.youtube.com/watch?v=vQQfYHIEIeo code that tells a Web user that a requested page is "Not found." 404 and other status codes are part of the Web's Hypertext Transfer Protocol ( HTTP ), written in 1992 by the Web's inventor, Tim Berners-Lee. He took many of the status codes from the earlier Internet protocol for transferring files, the File Transfer Protocol ( FTP .) What to 404 error Do If You Get a 404If the site no longer exists, there's nothing you can do. However, it only takes one mistyped character to result in a 404. See whether the ".htm" should be an ".html" or vice versa. If you're linking from a Web site, you can do a "View source" to make sure it wasn't miscoded. Whether or not it is, you may want to send a note to the Webmaster so that the link 404 not found can be fixed for the next users. How to Handle 404s If You Have a Web SiteHere are some things you can do: Use a Web site analysis tool such as Web Trends or Weblog to identify links that result in 404s, then fix the links. If you change the Uniform Resource Locator ( URL ) for a page on your site, retain the old URL as a redirect file, putting a message on it and inserting a META element with a REFRESH to change to the new URL in a specified number of seconds. You can create the page contents for a 404 status code page and substitute it for the 404 page that the browser usually provides. This will allow you to personalize the message and encourage the user to send a note to the Webmaster so that the situation can be fixed.
This was last updated in March 2011 Contributor(s): Havi Hoffman Posted by: Margaret Rouse Related Terms Definitions internet meme - An internet meme is a cultural phenomenon that spreads from one person to another online, usually in the form of a video or an image with a brief message. (WhatIs.com) leet speak (leet) - Leet speak, also known as simply leet, is the substitution of a word's letters with numbers or special characters. In leet speak, characters and combinations of characters are oftenErrors Brad Dalton SubscribeSubscribedUnsubscribe2,0762K Loading... Loading... Working... Add to Want to watch this again later? Sign in to add this video to a playlist. Sign in Share More Report Need to report the video? Sign in to report inappropriate content. Sign in Transcript Statistics 237,130 views Like this video? Sign in to make your opinion count. Sign in Don't like this video? Sign in to make your opinion count. Sign in Loading... Loading... Transcript The interactive transcript could not be loaded. Loading... Loading... Rating is available when the video has been rented. This feature is not available right now. Please try again later. Uploaded on Nov 23, 2011http://wp.me/p1lTu0-5Qs Tutorial about how to easily locate and quickly fix 404 page not found errors using Google Webmaster Tools Category Film & Animation License Standard YouTube License Show more Show less Loading... Advertisement Autoplay When autoplay is enabled, a suggested video will automatically play next. Up next How to Fix Windows Error 404 - Duration: 4:42. Error Support for Windows PC 158,462 views 4:42 What is 404 error and how to solve it - Duration: 21:48. Usman Ali 281 views 21:48 PHP-HTTP 404 Page Not Found Solved - Duration: 8:28. Programming At Kstark 78,530 views 8:28 How to Fix 404 Errors (Page Not Found) - Duration: 3:13. Deacon Hayes 1,517 views 3:13 Using Google to fix 404 errors - Duration: 5:49. 1AutomationWiz 44,388 views 5:49 Error 404 Page Not Found" Solution of Path Link Error - HTML/PHP/SEO web developers must see - Duration: 12:40. Fungs Film Production 30,982 views 12:40 Download HTTP Error 404 - File or Directory not found SOLVED for Torrent - Duration: 2:39. TechStudio 5,912 views 2:39 How do I Resolve Error 404 Page Not Found - Duration: 14:30. MyQuickIdea 1,297 views 14:30 Few WAYS How to solve, 404 Not Found, host, etc, localhost, malwarebytes, nginx/1.1.14, nginx - Durat