Which versions are no longer supported?

Support is discontinued for versions 19.1 and later of the following products: Avast Premium Security (previously Avast Premier), Avast Free Antivirus, Avast Omni, Avast Pro Antivirus, Avast Internet Security that are running on Windows XP or Windows Vista. These versions are supported on PCs running Windows 7 or newer.

Which versions are still supported on XP and Vista?

Versions 18.8 and lower of the following products: Avast Free Antivirus, Avast Pro Antivirus, Avast Internet Security, and Avast Premier are still supported on Windows XP and Windows Vista.

People using older versions of Avast Antivirus on Windows XP or Windows Vista will continue to receive virus definition updates and be protected. However, we recommend upgrading to the newest versions of Windows and Avast Antivirus to benefit from the best detection rates and newest features available.

How can I update my Windows PC and Avast Antivirus versions?

If you are using an older version of Avast Antivirus on Windows XP or Windows Vista and you want to update the application version, you first need to update your Windows XP or Windows Vista operating system to Windows 7 or newer. To upgrade to Windows 7 or newer and install the latest Avast Antivirus version:

1. Install Windows 7 or newer by following the instructions on Microsoft Support:
   • Microsoft Support ▸ Install Windows 7 Service Pack 1 (SP1)
2. Uninstall your Avast Antivirus. For instructions, refer to the following article: Using the Avast Uninstall Tool.
3. Install your preferred Avast Antivirus app:
   • Installing Avast Free Antivirus
   • Installing Avast Premium Security
   If you install Avast Premium Security, you also need to activate the app. For instructions, refer to the following article: Activating Avast Premium Security.

For detailed instructions on how to keep your Avast Antivirus application version up to date, refer to the following article: Updating Avast Antivirus.

Why should I update my Windows PC and Avast Antivirus versions?

We recommend upgrading to the newest version to benefit from higher detection rates and enhanced features. This update is also recommended because the latest version is compatible with Microsoft Windows 10 and Microsoft Windows 11.

Keeping Avast Antivirus up to date gives you better protection and smoother user experience. The advantages are:

• Better detection rates
• Easier technical support
• Fewer bugs and problems that still might exist in older versions
• Further application updates to ensure the best protection for your PC

Can I still receive virus definition updates on versions that are no longer supported?

Yes - People using older versions will continue to receive virus definition updates and be protected. However, we recommend upgrading to the latest versions of Microsoft Windows and Avast Antivirus to benefit from the best detection rates and newest features available.

Can I contact Avast Support when I am using a version that is no longer supported?

Avast support will ask you to update your operating system to Microsoft Windows 7 or newer before we can assist you with Avast Premium Security, Avast Free Antivirus, Avast Pro Antivirus, Avast Internet Security, or Avast Premier versions 19.1 and later.

What if I continue to use a version of Avast Antivirus that is no longer supported?

People using older versions will continue to receive virus definition updates and be protected. However, we recommend upgrading to the newest version to benefit from the best detection rates and newest features.

If you prefer to run Avast Antivirus on Windows XP or Windows Vista and require technical support, our support team will ask you to update to Windows 7 or newer before we can assist you with version 19.1 and later.

How can I download Avast Antivirus for Windows XP?

If you still wish to use Avast Antivirus for Microsoft Windows XP, download Avast Free Antivirus and follow the on-screen instructions to complete the installation process. Please keep in mind that you will not benefit from the best detection rates or the newest features.