An error 404 occurs on every website that undergoes changes in URL, and redesign.. It occurs when you click on a link, but instead of getting the site you want, an error pops up indicating that the requested page is not available. Something along the lines of '404 Not Found'. A 404 error is the standardized HTTP status code. The message is sent from the webserver of an online presence, to the web browser (usually the client) that sent the HTTP request. The browser then displays this error code.

Of all potential errors that can be found on your WordPress website, Error 404 is one of the frustrating ones for both you and your site visitors. Stumbling upon Error 404 is not something that you want your first-time visitors to experience. Also, a 404 can be an indicator that there were some changes, and you should add a 301 redirect for Search Engine Optimization (SEO) purposes.

This post is to clear some things up and help everyone get their WordPress site working correctly again. We will cover:

What is the Error 404 Not Found?
What Does the Error 404 Mean?
What can Cause the 404 Error?
Variations of Error 404 Not Found
The Impact of Error 404 on SEO
The Impact of Error 404 on Site Performance
How to Fix the 404 Error on WordPress?
Update the Permalinks of Your WordPress Website
Find the Cause via Debugging
Using FTP for Fixing the 404 Error
Set Up 301 Redirects For Renamed or Moved Content
Use cPanel for Redirects
Fix WordPress 404 Error (Internet Explorer)
How to Create Your Error 404 Not Found Page
How to Monitor 404 Errors Going Forward
Option 1 – Google Analytics
Option 2 – WordPress Plugin
Option 3 – Third-Party Audit Tool
Option 4 – Google Search Console
Last Words

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