When you try to upgrade from Pro to AIS in 1086, there is no way to do it. You have two choices from the installer if you already have Pro installed-Add more Pro features or uninstall. The firewall is not listed as an option. I had Pro installed with an AIS license to start. Tried it twice with same result. In the past there have also been problems installing AIS without the firewall, and trying to add it later. I have previously posted a whole litany of problems with this type of reconfiguration-may work once, but not regularly.