One other thing to remember is thatin order for OAC to be able to communicate to the IC, nothing can be blocking the HTTPS port on the IC. In other words, you have to allow HTTPS to the IC from wherever the PC is. Secondly, is the IP address of the PC changing when you are placing him onto the quarantine VLAN? OAC is not responsible for getting the DHCP address, it is up to the host OS to do this. It's possible that you are in fact changing VLANs, but not getting an IP on that VLAN this is what is causing the connection to the IC to fail. Hope that helps Craig ... View more