Which versions of Windows does Avast no longer support?

Avast no longer provides support for Avast Free Antivirus and Avast Premium Security (previously Avast Premier, Avast Pro Antivirus, and Avast Internet Security) installed on the following operating systems:

• Windows 7 Service Pack 1 without the Convenience Rollup Update
• Microsoft Windows Vista
• Microsoft Windows XP

Although you can still download and use Avast Antivirus on these operating systems, you will not receive application updates, and we will be unable to provide technical support. Therefore, we strongly advise upgrading to newer versions of Windows and Avast Antivirus to access enhanced features and higher detection rates.

What is the last Avast Antivirus version still compatible with Windows XP and Windows Vista?

The final version compatible with Windows XP and Windows Vista is Avast Antivirus 18.8. Users on these operating systems will remain on this version and will no longer receive application updates.

What is the last Avast Antivirus version still compatible with Windows 7 without the Convenience Rollup Update?

The final version compatible with Windows 7 (without the Convenience Rollup Update) is Avast Antivirus 21.2. Users on this operating system will remain on this version and will not receive further application updates.

Can I update Avast Antivirus to a newer version on an unsupported operating system?

No. You cannot update Avast Antivirus to a newer version if you are using it on an unsupported operating system. To access the latest version of Avast, you need to upgrade to a supported operating system.

1. Upgrade your Windows device to a supported operating system.
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 keep my Avast Antivirus up to date?

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

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

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

Yes. Avast Antivirus 18.8 on Windows XP and Windows Vista and Avast Antivirus 21.2 for Windows 7 without the Convenience Rollup Update, still receive virus definition updates which allow us to identify malware and other threats on your Windows device.

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

Avast support will ask you to update to a supported operating system before we can assist you with Avast Premium Security.

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

Avast Antivirus 18.8 for Windows XP, Windows Vista, and Avast Antivirus 21.2 for Windows 7 without the Convenience Rollup Update, will continue to receive virus definition updates. However, we recommend upgrading to the newest version to benefit from the best detection rates and newest features.

If you are using Avast Antivirus on Windows XP, Windows Vista, or Windows 7 without the Convenience Rollup Update and require technical support, our support team will ask you to upgrade to a supported operating system.