Hi List, One of my customers would like to have a single sign-on for OWA. Currently. the server is accessible via one website for internal and external use. This is configured for SSL. Since single sign-on does not work with SSL, I decided to create a second website for internal use only, that has integrated windows authentication. This all works great, except that I still have to logon when I start OWA. Of course, the pc that we use for OWA is a member of the domain, and the exchange server is also in the same domain. The specs are: windows 2003 server, exchange 2003 sp1 enterprise ed. The client is in fact a windows 2003 Terminal Server. I also read documents where you had to change a setting in IE6 to allow the use of integrated windows authentication. Any idea what needs to be done to use the single sign-on option for OWA??? Regards, Dennis Appelboom XB