: Select your operating system and language. For hardware appliances, you may also need to enter the hardware serial number.
If your Kerio Control instance cannot access the internet, or if you need a backup, you can manually generate and download the .key file from the GFI Kerio Product Registration page. kerio control download license file
This guide explains how to download your and apply it to your instance, whether you are using the online or offline activation method. How to Download Your Kerio Control License File : Select your operating system and language