avast! Free antivirus can be downloaded and used completely free of charge, however, you will need to register your use of the program within 30 days if you wish to continue to use it after that time. This will ensure that you continue to receive virus definitions updates and therefore remain protected against the very latest threats.
The easiest way to register is to just open the Maintenance tab on the left side of the screen and then click on Registration. Here you will see your current registration status e.g. “not yet registered”. To register click on Register Now.
A new window will open where you will need to enter a few basic details, then just click on “Register for free license” and your registration will be completed.
If you are using avast! on a computer that is not currently connected to the Internet, you can register on another computer by completing our online registration form. From the registration screen, simply click on “Registration form”. After entering your registration details, an email containing your license key will be sent to the email address that you entered. When you receive the email, follow the instructions to copy the license key, then open the avast! registration screen and click on “Insert the license key”. In the new window that opens make sure the full license key is entered and that it exactly matches the license key that was sent in the email.
You can now continue to use the program, and will continue to receive updates for a further 12 months to ensure you remain protected against the latest threats.
You will need to re-register each 12 months, but before then, you will see a message on the main summary screen informing you that your registration is due to expire. All you need to do is re-register and your protection will be renewed for another 12 months.