We run a consolodated Front End and Consolodated Edge Server and Have ISA 2006 Standard publishing the OCS site. The problem that we are having is with Live Meetings. When users try to join a meeting they are prompted for authentication even when the invitation is sent to allow anonymous access. I have checked the OCS front end server and anonymous access is enabled. Live Meeting works fine for users that have domain credintials, but I was under the impression that if the meeting was sent to allow anonymous then they would not be prompted to log in. If anyone has any suggestions of things that I can check to get the anonymous access working I would appreciate it.