When you purchase Avast Internet Security, you need to activate the product using your valid activation code from an order confirmation email, or via your Avast Account registered for the email address you used to make the purchase.
Before following the activation steps in this article, ensure the latest version of Avast Internet Security is installed on your PC. For instructions, refer to the following article:
Activate Avast Internet Security
- Avast Internet Security 19.x
- Microsoft Windows 10 Home / Pro / Enterprise / Education - 32 / 64-bit
- Microsoft Windows 8.1 / Pro / Enterprise - 32 / 64-bit
- Microsoft Windows 8 / Pro / Enterprise - 32 / 64-bit
- Microsoft Windows 7 Home Basic / Home Premium / Professional / Enterprise / Ultimate - Service Pack 1, 32 / 64-bit