What are 404 errors?

[thaichacha]

What are 404 errors?

[John-Smith]

The HTTP 404, 404 Not Found, and 404 error message is a Hypertext Transfer Protocol standard response code, in computer network communications, to indicate that the client was able to communicate with a given server, but the server could not find what was requested.

[albertocosta]

A 404 error is an HTTP error code that indicates that a document does not exist or more. In the case of this error, it is often because a document has been moved, deleted and / or the address mentioned is false. Clearly, the URL does not lead to anything and the web server is in charge of telling us.

[ademar]

In some cases, you will come across a page with a worked design, a message stating that the page no longer exists, and redirecting you to other categories or to the search bar of the website. In other cases, the 404 pages are presented as blank pages with a message such as "Caution!" Or red messages indicating that you are on a 404 page, or completely blank pages.

[searchenginewings]

404 errors are considered one of the most potential impediments in the way to successful SEO. When a specific URL is renamed or becomes non-existent, any links connecting to that URL would result in 404 errors. Interesting thing is, Google does not penalize any website for 404 errors. However, if the search engines consistently fail to crawl the internal links of any website, the search ranking of that website is very likely to drop with low traffic.

[RH-Calvin]

A 404 error is an HTTP status code that means that the page you were trying to reach on a website couldn't be found on their server. The 404 Not Found error might appear for several reasons even though no real issue exists, so sometimes a simple refresh will often load the page you were looking for. The most common method is to retry the web page by pressing F5, clicking the refresh/reload button, or trying the URL from the address bar again.