Subdomain drupal sites cannot read domain cookies I have set a cookie from domain (.example.co) and its .NET platform &amp; reading those cookie from drupal site(test.example.co).

While retrieving it shows empty, I have used $_COOKIE.

This link suggests it is possible, also we are setting domain name while creating cookies? Is it possible to use while retrieving cookies?

Also i have found this link, is that interrelated?
You need to provide an appropriate value for $cookie_domain in settings.php.

e.g.

$cookie_domain = 'example.co';


That will allow you to set/retrieve cookies from example.co on foo.example.co, and vice versa.