An (usually with a .lic extension) is a digital certificate that contains your specific registration details. It allows you to "side-load" your license into the Kerio Control interface without requiring the appliance itself to "call home" during the initial setup. Why Use Offline Activation?
The offline process is asynchronous and requires a bridge machine with internet access.
: Useful when setting up a new Kerio Control Box that isn't yet configured for WAN access.