Websites designed with the wordpress are giving 404 error’s after clicking on the links and this is happening due to changes in the rules under the .htaccess file of the domain. You suppose to replace the existing .htaccess with the wp .htaccess code :
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# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
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It should start working fine once its done!
