Activating a Kaspersky key is really simple, just follow these steps:

1. Go here to download the client.
2. Run the installation and follow the instuctions to activate your licence.

Alternative method

1. Download the software here 
2. Install the Kaspersky software
3. Launch Kaspersky
4. Click on the "Enter Activation Code" in the right-bottom corner
5. Choose "Activate application" option
6. Enter the code and save with "Activate"

Note that the software may require from you to create or login with Kaspersky account 

The key is not working

If you have activated the key according to the guide but the code appears not to work, please check what type of error message you receive and depending on it follow the appropriate instructions:

• My key is Duplicated / Already used
• My key is Invalid
• My key is region locked / can't be activated in my country
• My key activated a different product
• My key did not activate all of the content