How to Redirect other URL to 404 Page WordPress


You can redirect incorrect URLs to 404 page. First thing you need to create a 404.php file in your activated theme
You need to add the following code as the first line in your 404.php file:

header("HTTP/1.1 301 Moved Permanently");
header("Location: ".'');

Next, you need to save the 404.php file and reupload it to your theme directory using FTP or your hosting control panel.

Now, when a page is not found, it will redirect to 404 page.