Key file is a file with the .key extension that you receive from Kaspersky. Key files are intended to add a license key for activation of the application.
You receive the key file at the email address that you provided when purchasing Kaspersky Endpoint Detection and Response Optimum or when ordering a trial version of Kaspersky Endpoint Detection and Response Optimum.
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 the key file, perform one of the following actions: