10x i have found why i was having this problem, i found the answer here http://www.eggheadcafe.com/articles/20021016.asp[^] Q: Why does the SessionID changes in every request? A: This may happen if your application has never stored anything in the session state. In this case, a new session state (with a new ID) is created in every request, but is never saved because it contains nothing. Regards.