What is activation code
An activation code is an array of 4 blocks of characters you need to activate the application. Each block consists of 5 characters which can be a combination of letters and numbers, which comes to a total of 20 characters: ХХХХХ-ХХХХХ-ХХХХХ-ХХХХХ. An activation code is required for activation of the commercial version of the app.
If you have installed a product, but you do not have an activation code to activate the application, then you can buy a commercial license, get an activation code and activate the application.
What is license key
A license key is a unique combination of letters and numbers given in five blocks, which comes to a total of 32 characters: ХХХХХXXX-ХХХХ-ХХХХ-ХХХХ-XXXXXXXXXXXX.
Information about the key (license number) is firstly meant for communication with Kaspersky Lab Technical Support engineers (for example, if you want to restore your activation code). It is also required for renewing the license at a discount.
Once the product is activated with the activation code, the license key appears in the Licensing window. Remember that you need an activation code to activate (or reactivate) a product, that is why it is important that you keep it.
What is license
License is a document which gives rights to install and use software.