403 or 404 Forbidden Errors With WordPress
Add the following to .htaccess: <IfModule mod_security.c> SecFilterEngine Off SecFilterScanPOST Off </IfModule> If this is coming from linking external website (here facebook is taken as example). It is resolved by putting this in mod_security config file: <IfModule mod_security.c> SecRule SERVER_NAME “facebook\.com$” phase:1,nolog,allow,ctl:ruleEngine=off </IfModule>