You will find more detailed information about how to correctly prolong and update the license in KB4017.
How to activate a commercial version of Kaspersky Internet Security 2011?How to renew license in Kaspersky Internet Security 2011?How to know Kaspersky Internet Security 2011 license expiration date?
Release of antivirus database updates (required to protect your computer/server/mobile device)
Providing technical support over phone / web
Release of patches for the application (addressing detected bugs)
To display the product’s interface optimally it is recommended to use standard screen resolution not less than 800x600 pixels.
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