Hi, vaughan,

TKS for your info.
I do notice that there is no cookie of my XOOPs site on my IE cache. Since I change to other PC and internet connection, I believe that is not because of client browser or firewall.

The php.ini, I check my hosting, there is no "enable_trans_sid" on my web root php.ini.

How should I do? Or any other possiblity that my XOOPs cannot send cookie to browser.

TKS for any help.