Key file is a file with the .key extension provided to you by Kaspersky. A key file is intended for adding a key that activates the application.
You receive your key file through the email address that you specified after purchasing Kaspersky Security Center.
To activate the application using a key file, you do not have to connect to Kaspersky activation servers.
If you have selected this activation option, you can enable the Automatically distribute license key to managed devices option.
If this option is enabled, the license key will be deployed automatically to managed devices.
If this option is disabled, you can deploy license key to managed devices later, in the Kaspersky Licenses node of the Administration Console tree.