It's a known problem and it's Web Protection in adaware that blocks the access of the printer. They're working on a solution that will be  included in the next major release of adaware, but I don't know the time plans for future versions. In the mean time it's possible to disable Web Protection by following this instruction: 1. Please stop Ad-Aware service (make a right click on the Ad-Aware icon in the tray menu and choose "Stop Ad-Aware service") 2. Go to c:\Program Files\adaware\adawar