Dear all, I've been using the code http://www.infinitec.de/articles/exchange/webdavwithfba.aspx which is a ASP.NET program to login the Form Based Authentication in Exchange 2003 OWA automatically. (i.e simulate user login) In the .NET program, I tried to pass the username and password to the owaauth.dll, then it returns 2 cookies (the cookie names are sessionid and cadata) to my ASP.NET program if all goes correct, and then I will implant the cookies returned to the user's browser, so to the client, it seems it has already logined the OWA. The program I am facing now is that there is only 1 cookie returned which the name is called "UserContext" when I port the program to Exchange server 2007 and this program works in 2003 before. Please help! Thank you very much ~ Ginrai