License Compatibility of Kaspersky Lab Products’ Versions

August 22, 2013

We have discovered that we should keep a Quick Start Guide with an activation code that may be required to activate your application after re-installation. Let’s imagine that you re-install your operating system and Kaspersky Lab product. You have an activation code for Kaspersky Internet Security 2013 and visit the Kaspersky Lab official website to download the product. In this case, you will only find Kaspersky Internet Security 2014 and no 2013 version at all. Don’t worry! According to the License Agreement for your product, you can upgrade to the latest version of a product activated with your activation code.


Does it mean that you can purchase many licenses for future use? Let me explain some license features concerning license compatibility of home products’ versions.


Product’s version compatibility can be presented with the following formula “-1/+3”. It means that you can activate your current version of the product, a previous version and three new versions when upgrading the product. So, you have an activation code for Kaspersky Internet Security 2010. In this case, you can activate the following product’s version: 2010 (purchased version), 2009 (previous version) and 2011, 2012, 2013 (three new versions). The activation code is not compatible with Kaspersky Internet Security 2014.

Therefore, if you want to use the latest product version, do not purchase many licenses for future use – just renew a current license when it expires.

The migration policy to the 2014 version is the following:

KL Chart

The provided compatibility formula can also be applied to other Kaspersky Lab antivirus solutions for home use: Kaspersky PURE, products for Mac OS X and antivirus solutions for mobile devices and tablets. Be aware that the License Agreement for Kaspersky Password Manager is different from Kaspersky Lab antivirus software agreements. There is no license compatibility between Password Manager versions, for example: 4.0 and 5.0.

Kaspersky Lab also has universal solutions: Kaspersky ONE (K-ONE) and a new product, known as Kaspersky Internet Security Multi-Device (KIS-MD). An activation code from one of the packages is compatible with all required antivirus products on different devices (products for Windows, Mac OS X, Android (Mobile, Tablet)). Nevertheless, Kaspersky ONE uses the previous licensing system where a license number consists of 18 symbols. Kaspersky Internet Security Multi-Device supports only a new licensing system, which can be easily identified by a 32-symbol license number. KIS-MD does not support old Kaspersky Lab products.

Let’s view a comparison of license compatibility features in the following table:

Get more by upgrading to latest versions with new and improved features, and activating them with your activation code, but remember that your activation code is compatible only with three new versions!