Making sure two different wordpress website has auto login

Question

I have been working on two different installations: https://pax-security.nl https://pax-security.nl/intranet and want to make sure that if you login on the domain it will also auto login on the intranet website on the same domain.

1. I made sure both websites are installed on the same database.
2. Made sure the salt keys are the same on both configs.
3. The code I entered on the main domain config file:

---

define( 'COOKIE_DOMAIN', 'pax-security.nl' );
define( 'COOKIEPATH',    '/' );
define( 'COOKIEHASH',    md5( 'pax-security.nl' ) );

define( 'CUSTOM_USER_TABLE',      'wp_users' );
define( 'CUSTOM_USER_META_TABLE', 'wp_usermeta' );

4. The code I entered in the intranet config file:

---

define( 'COOKIE_DOMAIN', 'pax-security.nl' ); // Dot prefix
define( 'COOKIEPATH',    '/' );
define( 'COOKIEHASH',    md5( 'pax-security.nl' ) );

define( 'CUSTOM_USER_TABLE',      'wp_users' );
define( 'CUSTOM_USER_META_TABLE', 'wp_usermeta' );

I can create an account on the first install and use it on the intranet website, but it is not automatically logging in. What is going wrong here?

Answer 1

On both sites COOKIE_DOMAIN define has missing a . in front of domain name. It should read:

define( 'COOKIE_DOMAIN', '.pax-security.nl' );