1) Open the horde configuration file. cd /usr/local/cpanel/base/horde/config vi conf.php 2) Change the following two lines from: $conf[’sql’][’hostspec’] = ‘localhost’; $conf[’sessionhandler’][’params’][’hostspec’] = ‘localhost’; To: $conf[’sql’][’hostspec’] = ‘localhost:/var/lib/mysql/mysql.sock’; $conf[’sessionhandler’][’params’][’hostspec’] = ‘localhost:/var/lib/mysql/mysql.sock’;