WordPress multisite,use same cookies across all website?

Came across this support topic which may be helpful. It indicates the following for your wp-config.php file:

define('ADMIN_COOKIE_PATH', "https://wordpress.stackexchange.com/");
define('COOKIE_DOMAIN', '');
define('COOKIEPATH', '');
define('SITECOOKIEPATH', ''); 

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)