<- Glossary

What are Common Causes of HTTP 404 Errors

HTTP 404, also known as the "Not Found" error, is one of the most common errors encountered when using the web. It occurs when a web page can't be found on a server, either because the URL is incorrect or because the page has been removed or moved.

A 404 error is an HTTP status code that indicates the page requested by the user cannot be found on the web server. This is a client-side error that occurs when a user attempts to access a page that doesn't exist. The web server returns a "404 Not Found" message when it cannot locate the requested page.

There are several common causes of HTTP 404 errors, including incorrect or outdated URLs, typos, misconfigured web servers, and misconfigured website settings. In addition, outdated content, broken links, and missing files can all lead to a 404 error.

Incorrect or Outdated URLs

One of the most common causes of HTTP 404 errors is an incorrect or outdated URL. This can happen when a user types the wrong address into their browser, or when the web page has been moved or deleted without redirecting the old URL.

In some cases, the URL may be correct but the page no longer exists. This can happen when a website is redesigned or restructured and old pages are removed. In such cases, it's important to set up redirects so users are taken to the new page instead of a 404 page.

Typos

Another common cause of HTTP 404 errors is typos. This can happen when a user mistypes a URL or makes a typo when creating a link. It's important to double-check URLs before submitting them to make sure they are correct.

Misconfigured Web Servers

Misconfigured web servers can also cause HTTP 404 errors. This can happen if a web server is not properly configured to serve the requested page or if the server is unable to locate the requested file.

Misconfigured Website Settings

Misconfigured website settings can also lead to HTTP 404 errors. This can happen if certain website settings are incorrect or if some files are missing. It's important to check the website settings to make sure everything is configured properly.

Outdated Content

Outdated content is another common cause of HTTP 404 errors. This can happen when a web page has not been updated for a long period of time and the content is no longer relevant. It's important to keep content up-to-date to ensure users are able to find the information they are looking for.

Broken Links

Broken links can also lead to HTTP 404 errors. This can happen if a link is incorrectly coded or if a page has been moved or deleted without updating the link. It's important to check all links on a website to make sure they are working correctly.

Missing Files

Missing files can also lead to HTTP 404 errors. This can happen if certain files are not uploaded to the server or if the file paths are incorrect. It's important to check all files to make sure they are uploaded and the paths are correct.

By understanding the common causes of HTTP 404 errors, webmasters and website owners can take steps to prevent them from occurring. This can include checking URLs, double-checking website settings, keeping content up-to-date, and checking all links and files. Doing so can help ensure users are able to access the content they are looking for.

This glossary entry is part of the LoadForge Glossary. LoadForge provides load testing and stress tests for websites, APIs, databases and webservers. Sign up today to start testing.