Port 0

[amy]

If the HTTPS port is set to 0, it will not even try to start the HTTPS listener, so that's not it.

Do you have some other blocking software that may be redirecting requests to localhost? The Proxomitron won't connect to 127.0.0.1 unless something told it to. If you could have the log window open and show what it says when your firewall shows that warning, that might help troubleshoot where this is coming from.

In any case a connection to port 0 is unlikely to work, as it is nearly impossible to get something to listen on that port.