Hi, i am a newbie to sharepoint, but is collected loads of info about the product. I have a single serve deployment, windows 2003 with sp1, sql server 2000 with sp3a installed iis, configured a single sign on account with the necessary rights. But every time i try to configure the serversettings for single sign on, i get an error access denied when i want to apply my settings. I can see this error in the log: source: Micrososft single sign on service code Eventid: 1038 Anyone any ideas? Thanks in advance. Regards, Rob Mokkink