What is a key file and how to add one


Kaspersky Anti-Virus 5.5 for Proxy Server


What is a key file and how to add one

Back to "Licensing and Activation"
Latest update: August 26, 2021 ID: 859

A key file contains all information required for Kaspersky applications:

  • Distributor's coordinates (the name of the firm and its contact information) 
  • Information about support (who provides it and where it can be received) 
  • Key release date 
  • The name and number of the license 
  • Components functionality table 
  • License validity period 

There are two kinds of key files: 

  • Commercial key file 

    A commercial key file activates Kaspersky applications purchased legally for their further usage during their validity period. 

    When the license expires, the application will function, but the anti-virus databases will not be updated. The anti-virus will disinfect infected objects using old anti-virus databases.

  • The users of commercial key files have the right for full technical support via CompanyAccount.

  • Trial key file 

    A trial key file allows to get acquainted with Kaspersky applications during a limited period of time. Trial keys are free.

    When the trial key expires, the application will not start.

  • The users of trial key files have the right for full technical support via CompanyAccount.

The application does not work without a key file. We recommend that you save the key file on a separate drive (disc, flash, CD) so you can restore it if necessary. 

The applications will not start without a key file.

To know what key file is installed, run the command:

  • Linux - 

    # /opt/kaspersky/kav4proxy/bin/kav4proxy-licensemanager -s 

  • Freebsd - 

    # /usr/local/bin/kav4proxy-licensemanager -s

To add a new license key file, run the command:

  • Linux - 

    # /opt/kaspersky/kav4proxy/bin/kav4proxy-licensemanager -a <path_to_key>  

  • Freebsd - 

    # /usr/local/bin/kav4proxy-licensemanager -a <path_to_key>

Only two keys can be used simultaneously: active and reserve. The active key functions at present time. The reserve key is activated automatically after the current key expires (or in case it is removed). 

The key which is added first is installed as active. 

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