404 Page Not Working

Here are 10 Quick Tips

Ensure the server is configured to handle 404 errors and directs them to a custom 404 page.
Check the URL to make sure it points to the correct location of your 404 error page.
Verify that the 404 error page file exists on the server and is accessible.
Review the server logs to identify the cause of the 404 error and any related issues.
Test the 404 page in multiple browsers to rule out browser-specific problems.
Ensure the 404 page is properly linked in your server configuration files or .htaccess file.
Check for any JavaScript or CSS errors on the 404 page that might prevent it from displaying correctly.
Verify that any redirect rules do not unintentionally bypass the 404 error page.
Ensure your content management system (CMS) settings are configured to use the custom 404 page.
Update the 404 page content to include helpful navigation links or a search bar for better user experience.