Hello,

As I'm working locally, with the new J! 17.3, I've setuped those 2 variables like this :
public $cookie_domain = '.localhost';
public $cookie_path = '.localhost';

My website is under a folder, but the "domain" still localhost (or am I wrong ?)

So, each time I'm loggued in into administrator panel, I'm also loggued in into the frontend.
If I logout from the front, I got logout from the admin...

I did not have to setup those variables whithout JMS multisite (no session problems at all with empty values), and I don't see what I should replace here...
As it's a new Xampp, I havn't setuped the server to allow multisite feature.

Thanks for your help !

In Joomla 1.7 the cookie parameter can be defined in the "global configuration".
I suppose this is what you did when you mentioned that you have setup 2 variables.
I suppose you make reference to the Joomla "configuration.php" variables.

If yes, I think that the cookie_path is wrong.
In general it remain empty or is "/" but not a live with a ".localhost" as you mentioned it.