New Avast 2018 December Update has been released and you may be wondering how to update your Avast Antivirus. Luckily, you can do the program update completely for free. With some other vendors, you would need to actually pay for the update, but not with Avast.

You can perform the update process using one of these two options:

Quick Summary

  1. Right-click on the Avast orange icon in the Windows system tray and open Avast UI
  2. Go to Settings » Update » PROGRAM and click on Update
  3. Once update is finished restart your computer

Read more detailed steps and other options including screenshots below

1. Begin the Program Update Process

If your version is outdated, or if you aren’t sure, you can easily check to see if there is a newer one available. Open your Avast and go to ‘Settings‘ » ‘Update.‘ In the tab ‘PROGRAM,‘ you can check if your Avast is outdated or not – if so, you will see a message ‘A new version of the program is available!’. To begin the actual update process, simply click on the ‘Update‘ button.

Updating Avast Version 2018 – Starting the Update Process from Program Interface

Updating Avast Version 2018 – Starting the Update Process from Program Interface

OUR TIP Set automatic program updates, so your Avast is always up-to-date by going to Update Settings and selecting ‘Automatic Update’.

You can also perform the program update via the system tray. There, you will find the orange Avast icon, right-click on it, select ‘Update,‘ and then ‘Program.

Updating Avast Version 2018 – Starting the Update Process from Windows Systray

Updating Avast Version 2018 – Starting the Update Process from Windows Systray

Sometimes, Avast will display a yellow pop-up message informing you about the new program version, and a direct ‘Update now‘ button.

Avast 2018 Update Pop-up Notification

Avast 2018 Update Pop-up Notification

2. Finish the Update Process and Restart Your Computer

Wait until program finishes the update, and after that just restart your computer. You can do it by yourself or by clicking on the button ‘Yes‘ after the program update is downloaded. Do not try to use Avast before you restart your computer.

Updating Avast Version 2018 – Downloading Program Update

Updating Avast Version 2018 – Downloading Program Update

Updating Avast Version 2018 – Restarting Computer

Updating Avast Version 2018 – Restarting Computer

3. Complete the Update Process

After you restart the computer, following post-update screen will appear. It usually contains some additional offers for Avast products like free 20-day trial of Avast Internet Security and more information about the applied program update. To close this screen and start using Avast antivirus just click on the link ‘No thanks – close this window‘.

Completing Avast 2018 Update – Post-Update Screen

Completing Avast 2018 Update – Post-Update Screen

4. Enjoy Peace of Mind with the Latest Version

That’s it, now you should be running on the latest version. You can check that by going to ‘Settings‘ » ‘Update,‘ where you shouldn’t see any message about new versions available, though you will always see the ‘Update‘ button.

Update of Avast Version 2018 Finished – No Newer Version is Available

Update of Avast Version 2018 Finished – No Newer Version is Available

Free Download of Previous/Older Version of Avast

If for any reason you would like to go back to your previous version, you need to uninstall the program, get the installer for the previous version, and install Avast again. Getting the installer for your previous version may be quite hard as Avast officially offers only the latest version for download.

However, you can still find older versions on some servers like FileHippo. Older Avast version are still receiving the virus definitions updates, same as the latest one.

Here are the free download links for the popular older versions which are still working

Avast Program Update Release History

Cover every Avast program update which has been released would take many pages. But if you want to check it, you can find it on the official Avast forum. You will find there release dates and changes from 2012 (version 7) to the actual one.

The Difference Between Update and Upgrade Explained

Some users are confused with the terms update vs. upgrade. So here is the difference:

  • Update – Means actualization to the latest version of the same product. In the case of Avast products, it’s completely free.
  • Upgrade – Means migration to a better product from the same vendor. Obviously, upgrades are paid.

Additional Notes

Although we have used Avast Free Antivirus 2019 screenshots in this article, these steps are also applicable for all Avast Antivirus solutions (i.e. also for Avast Pro Antivirus, Avast Internet Security, or Avast Premier) running the latest version available.

Steps are relevant for all Windows versions – Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1 and Windows 10 (including Anniversary Update).

Looking for information how to update Avast virus definitions (VPS) manually/offline? Check out our how-to guide on Avast virus definitions update – How to Manually/Offline Update Avast Virus Definitions (VPS) for Free.

If you’re looking for a guide on updating Avast older versions check the links below:

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 45 comments | Did we miss anything? Just let us know in the comments!

  1. 'dimeji Adetona Reply

    I am unable to update my Avast free anti-virus programme for 2019. How do I go about it. Thanks.

  2. David Reply

    After installing Avast my PC has clamped up …. cant open many apps, email, XLS, msinfa32 (?), Word, etc, etc

    If I click too many buttons trying to get anything to work my PC locks up ending with a blank screen !

    I am now into second day of trying to uninstal Avast …. that function wont work either .. it refuses to open !

    Revo uninstaller wont open either !

    What the hell do I do now ? I can use internet and that’s about it!

    I am using Windows 10, free vs due to exchange offer for win 8 by M’soft

    Any one here got any clues ? I have given my e-address below, but as explained above my email wont work either !?

  3. Leonhard Stiny Reply

    When I update my Free Antivirus from Version 12.3.2280 to Version 17.3.2291 my PC is no longer usable. There are error messages like “Anwendungsfehler Outlook.exe konnte nicht gestartet werden”. Programs cannot be startet. To shut down the system it needs a very long time, about 10 or 15 minutes.
    This fatal error occurs only on my system with Windows 7 Prof. 64 Bit and only when I activate the modul “Behaviour Protection” (Verhaltens-Schutz). With my Win 7 Premium Home Edition (32 Bit), which runs in a Virtual Box, there is no such error.
    After a new installation of Antivirus there were the same error again. In forum Avast Free Antivirus I get no help.
    Can anyone help please?

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