Wordpress Multisite Single Login

I have a WordPress multisite setup with 40+ sites. (latest WP Version) I'm currently attempting to allow users to login to just one site through their account and be logged into all their accounts across the multisite. I'm getting different answers and plugins though nothing seems to be working, even Super Admin has to log into different sites.

I've tried this within my wp-config:

define( 'COOKIE_DOMAIN', '' );  define( 'ADMIN_COOKIE_PATH', '/' );  define( 'COOKIEPATH', '/' );  define( 'SITECOOKIEPATH', '/' );  define( 'COOKIEHASH', md5( 'domain.com.au' ) );  

Though that doesn't seem to be doing anything.

Any help on this matter would be greatly appreciated. Thank You.

https://stackoverflow.com/questions/67249673/wordpress-multisite-single-login April 25, 2021 at 12:06PM