Why do you say that you try setup the php.ini ?

hi
cause the session_domain was empty.
i've set it -> session.cookie_domain= .mydomain.com
and and it work (i've updated jms as you told)
the only thing that remain is about logout the site perform it separate ....
i don't know if it's normal...

hi Edwin
the login now work, only the logout still be separeted on each site...
do you have any idea about or it's normal ?

I don't understand why you set the session.cookie_domain= .mydomain.com into the PHP.ini.

JMS manage it internally when required.
If the sessions was not present, this is because you don't have same domain name.

Concerning the logout, I don't know.

First I would like that you setup the login correctly.
You don't have to put anything in the PHP.ini concerning the session.cookies_domain.
I never told you to do that.

Check also that all the patches are correctly installed.

hi Edwin the patches are all correctly installed.
the domain name is the same (subdomain created in the cpanel)
www.master.com
www.slave1.master.com
the only thing that (maybe)can cause the problem is that the master site is located in a subfolder:
www.master.com/start
this way login work only with "session.cookie_domain" manually setted .
i really dont'know .. you can see that i'm fresh bout programming.

You can NOT hack the session.cookie_domain in the PHP.ini file because the value is compted automatically and depends on the context.
If the domains are identical, you should have this "cookie_domains" setup when you have a look in the "system" / PHP Info.

Otherwise, I don't know.
If you want that we have a look on your server, I have probably told you that we also have billable support that you can order at www.jms2win.com/download?page=shop.produ...35&category_id=1