External Authentication
Change it so they all use the same db but different prefixes (if you’re not alreasy using that). Then adjust the wp-config.php to use the same user tables for all installs: http://codex.wordpress.org/Editing_wp-config.php#Custom_User_and_Usermeta_Tables Don’t forget to make sure the safety hashes of all installs are the same. And perhaps it is useful to set the cookie … Read more