Disable Plugin Update Notifications remove_action('load-update-core.php', 'wp_update_plugins'); add_filter('pre_site_transient_update_plugins', '__return_null'); Disable Theme Update Notifications remove_action('load-update-core.php', 'wp_update_themes'); add_filter('pre_site_transient_update_themes', create_function('$a', "return null;")); Disable Core Update Notifications if (!current_user_can('update_core')) { return; } add_action('init', create_function('$a', "remove_action( 'init', 'wp_version_check' );"), 2); add_filter('pre_option_update_core', '__return_null'); add_filter('pre_site_transient_update_core', '__return_null'); }