A key file is a file with the .key extension provided to you by Kaspersky. Key files are designed to activate the application by adding a license key.
You receive a key file at the email address that you provided when you bought Kaspersky Security Center or ordered the trial version of Kaspersky Security Center.
You do not need to connect to Kaspersky activation servers in order to activate the application with a key file.
You can restore a key file if it has been accidentally deleted. You may need a key file to register a Kaspersky CompanyAccount, for example.
To restore your key file, perform any of the following actions: