I'm using SelfSSL.exe on IIS 6 to generate self-signed certificates for two sites. I found that when I generate a certificate for my second site, it breaks connectivity to the first site. When I regenerate a certificate for the first site, it breaks connectivity to the second site, and so on. For what it's worth, the first site is listening for SSL on port 10443 and the second site is using port 11443, and I am specifying the different port numbers when creating the certificates.
Can anybody shed some light?