error 1717 Then trying to start ICS service, it tell that some dependent components failed to start, and i found that sstp making problem with error 1717: Unknown interface or something...

Hi, It is recommended to remove and reinstall Windows Vista SP1 to resolve the issue. If the issue still persist, hope the following link can help you. How to change the computer certificate on a Windows Server 2008-based computer that is running the "Routing and Remote Access" service and SSTP http://support.microsoft.com/kb/947027 Thanks.