Hi, I know that all ISA Server in the same group of server ISA must be in the same site and domain Active Directory. I have an ISA Server member of an AD domain (not DC), and a DC. I have on this DC modify the schema for ISA, and when I try to promote my ISA Server, I have a dialog box with said that I need to be on a site. So, on the site and service AD, I create a new object in the unique site I have, but nothing better !!! i don't want to install AD on my ISA Server. How can I do to promote it ? Thanks a lot in advance. Phil.