You probably already know that Avast Free Antivirus 2018 is totally free and you don’t have to pay a cent to be protected. At least if you’re using it in your household for non-commercial activities.

However, there is one thing you have to do within the first 30 days and each year after. Even though you will get the license only for 1 year, you can get a new one when it expires. So you can basically keep using Avast for free forever.

It’s called activation for a license key (activation code) or serial key, and it’s very simple.  It also works in any older version like Avast 2017, 2016, 2015, 2014, 8, 7, 6, 5 or v4.8. In the past, Avast was also using license files which were generated for a specific e-mail address. License files are luckily not used anymore and the only thing you need is a simple 28-character long unique code.

WARNING We strongly do not recommend using any keygen or crack you may find on the Internet. Most of them are full of malware.

If you like videos, there is a fantastic commented video manual on this page, which explains the whole activation process in a few seconds. And don’t worry if you are not able to retrieve your own license key, we have got one for you at the end of this tutorial.

Activate Your Avast and Get Your Free License Key (Activation Code)

Step 1 (out of 4) – Open Avast and Start the Activation

Start by opening your Avast user interface. You can do this in many ways:

  • Find Avast icon on your desktop
  • Find Avast program in your Start menu
  • Find Avast icon in the Windows system tray (bottom-right corner). It is usually hidden, so you need to click on the top arrow

When Avast user interface is opened you can activate it by clicking on the ‘ACTIVATE‘ button at the bottom left corner of the main window, ‘Activate‘ link in the status area, or by going to settings (bottom left corner) » ‘Subscription‘.

Avast Free Antivirus 2018 License Activation – User Interface

Avast Free Antivirus 2018 License Activation – User Interface

Alternatively, you can also find the Avast icon in the Windows system tray (bottom-right corner), right-click on it and select ‘Registration information‘.

Avast Free Antivirus 2018 License Activation – Windows System Tray

Avast Free Antivirus 2018 License Activation – Windows System Tray

If you are getting closer to the expiration date, Avast may also prompt you with the expiration pop-up.

Written by Paul B.

My name is Paul and I love Avast since the Home Edition v4.8 (2008). I am recommending it to all my friends, but I realized they don't know how to use it. So I started this site in order to help others getting maximum from this awesome antivirus. Feel free to contact me via Facebook, comments below or this form.

This article has 306 comments | Did we miss anything? Just let us know in the comments!

  1. Stu Mountjoy Reply

    A friend of mine tried his best to convince me that his computer was heavily infected, based on the results of a two-year-old AVG with same age definitions, sigh. So I ran your FREE product, no threat detected. Would that sort out the argument, that his computer is fine? He says anti-virus programs CAN be defeated, would that be the case if booting straight off a rescue CD? Would it still be compromised by infection in the BIOS?

  2. Stewart Buckingham Reply

    This didn’t work at all for me using the free antivirus. I logged into my account. It said I had nothing connected to my account. I followed the instructions. It reinstalled the free antivirus over my existing copy. I was never given an activation key at any time. When I now login to my account. I’m now told I have one version installed (on my PC). But I still have no activation key which I can enter. Please help.

  3. dylane Reply

    thanks a lot it works!! Mine is activated with your code for avast premier for 2 years

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