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What Is a 404 Not Found (Page Not Found) Error?

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This article was originally published in Turkish on and migrated from our previous website. This English version translates the archived article. Promotions, prices, product features, roles and service availability are historical information, not current offers or guarantees.

Contents

Definition

404 Not Found is an HTTP status code indicating a page cannot be found on the server. If a user enters a URL or follows a link and the server cannot find the corresponding page, this error appears. Common reasons are deleted or moved pages or incorrect URLs.

Causes

  • Incorrect URL: A user enters the wrong address or follows a faulty link.
  • Moved or deleted page: Administrators forget to update old links.
  • Server errors: Configuration mistakes.
  • DNS issues: Incorrect domain configuration or DNS server problems.

Solutions

  • Check the entered URL.
  • Use appropriate 301 redirects for moved or deleted pages.
  • Create a custom 404 page to improve experience.
  • Review and correct server configuration.

SEO Effects

404 errors can negatively affect SEO. Search engines consider faulty links, which may influence overall rankings. Frequent errors also reduce trust. Administrators should minimize them.

Best Practices

  • Create an informative, user-friendly 404 page.
  • Keep the sitemap updated for better crawling.
  • Use link-checking tools to identify broken links.
  • Monitor and analyze frequency to resolve issues quickly.

User Experience

Users can feel frustrated when they cannot find content. A friendly 404 page can prevent abandonment. Offering alternative content improves their experience.

Frequently Asked Questions

What is 404 Not Found?

An HTTP code indicating a page cannot be found.

Why does it occur?

Usually a wrong URL or deleted or moved page.

How is it resolved?

Check URLs, redirect and create a custom 404 page.

Does it affect SEO?

Yes, frequent errors may negatively affect SEO.

Why is a custom page important?

It improves experience and prevents abandonment.

Which tools can help?

Various analysis tools identify broken links.

What should I do?

Check the URL and implement needed redirects.

How does it affect users?

They may become frustrated when content is missing.

Can server errors cause it?

Yes, configuration errors can cause it.

Can DNS problems cause it?

Yes, incorrect domain configuration or DNS problems can cause it.

404 errors matter to administrators and users. Understanding causes and solutions is critical to improving experience and SEO performance.

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