A key file is a file with the .key extension that you receive from Kaspersky Lab. Key files are designed to activate the application by adding a key.
You receive a key file at the email address that you provided when you bought Kaspersky Anti-Virus or ordered the trial version of Kaspersky Anti-Virus.
You do not need to connect to Kaspersky Lab 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 recover a key file, you must do one of the following: