Thanks techie. But, I suggest shutterbug solve the 2 antivirus application installed in his system… I make a shot that ZoneAlarm disabled could be blocking the connection. I have a proxy and it works with ZA (I don´t know much about Proxomitron, but proxies could be disabled without further trouble). Please, see Windows events like Techie suggested and try a little bit more the ZA configuration. Note, there is a new version: 4.5.530.000 (maybe a reinstall/update could help, in my system everything ok with this update, execpt the ZoneLabs now make ‘automatic updates’ the only default possibility to run ZA).