What is a 404 Error?
404 Error – “File not found” code for a Web page that displays when a user attempts to access a URL that has been moved, renamed or no longer exists. Used as a template for missing or deleted pages, designing a custom “404 page” in a user-friendly way can help people stay engaged with your site even when a given page turns up blank.
The messages are frequently customized by individual websites. So, keep in mind that it might show up in just about any way imaginable depending on what website it’s shown from.
Ways You Might See it
Here are some common ways in which you might see the In HTTP :
- 404 Error
- 404 Not Found
- The requested URL [URL] was not found on this server
- HTTP 404
- Error 404 Not Found
- 404 File or Directory Not Found
- HTTP 404 Not Found
- 404 Page Not Found
In Internet Explorer, the message The webpage cannot be found usually indicates an HTTP 404 error but a 400 Bad Request error is another possibility. You can check to see which error IE is referring to by checking for either 404 or 400 in the title bar.
It received when opening links via Microsoft Office applications generate a The Internet site reports that the item you requested could not be found (HTTP/1.0 404) message inside the MS Office program.
When Windows Update produces a 404 error, it appears as a code 0x80244019 or as the message WU_E_PT_HTTP_STATUS_NOT_FOUND.
Technically, it is a client-side error, implying that the error is your mistake, either because you typed the URL incorrectly or the page has been moved or removed from the website and you should have known.
Another possibility is if a website has moved a page or resource but did so without redirecting the old URL to the new one. When that happens, you’ll receive a 404 error instead of being automatically routed to the new page.