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Windows 10 full protection

Important info for Windows XP users

Avast Free Antivirus still protects Windows XP owners with regular virus definition updates. But we no longer provide program updates, new features, bug fixes, or support for Windows XP. We strongly recommend upgrading to the latest version of Windows. (Remember, Microsoft ended its security updates for Windows XP back in 2014.)

Safe upgrade to Windows 10

Runs smoothly even on Windows XP

AV Comparatives called Avast "the antivirus with the lowest impact on PC performance." It has almost no impact on your Windows XP's performance. Plus, advanced features like Cleanup and Browser Cleanup make things run even faster.

Approved antivirus for Windows 10

Official antivirus for Windows XP

AV Comparatives successfully tested Avast on Windows XP. And being Windows XP's official consumer security software provider is yet another reason why more than 435 million users trust Avast.

System Requirements

It doesn’t take much to protect your device with Avast. All you need is a PC with 256 MB+ RAM and 1.5 GB of hard disk space. If your Windows XP PC has that (which it very likely should), you’ll be good to go.

Avast Antivirus is compatible with Windows 11, 10, 8.1, 8, 7, Vista*, XP SP3**

Avast also offers you security solutions for your Android and Mac

* supported at least till Dec 2022
** version Avast Antivirus < 19.1

The people have spoken

And we want to hear from you, too. After all, you’re the reason we’re here.

Avast Free Antivirus for Windows 10



It's clean, easy, and works.

Avast Free Antivirus for Windows 10



It's very easy program

Avast Free Antivirus for Windows 10



easy to used < its the best

Avast Free Antivirus for Windows 10



I love Avast, I have used it for at least 5 years or maybe more. will continue to do so

Avast Free Antivirus for Windows 10



easy to used < its the best

Avast Free Antivirus for Windows 10



easy to use and download

Avast Free Antivirus for Windows 10



I love that it protects my computer, cell phone, and even my iPod. And I only have to have one account! Super easy

Avast Free Antivirus for Windows 10



Years and years using this software, I like it and lots of friends and family are using it too. If your computer is infected it goes straight to the base of your O.S. and kill the virus. Love it !

Avast Free Antivirus for Windows 10



It is the best antivirus on the market. Very efficient and easy to use. Would definitely use again and again.

To start using Avast, just follow these easy steps:

1Download the installer by clicking here.

2Right-click the installer and click “run as administrator”.

3Click “Install”.

4When the progress bar vanishes, your PC is protected.

And that's it! Your PC is 100% secure.


Does Avast Antivirus still support Windows XP?

While you can still download Avast Antivirus for Windows XP, we have discontinued our support for this version of our antivirus. While it will still protect you from malware, as its virus definitions (how we identify which files could contain malware and which are safe) continue to be updated, the antivirus itself lacks many of the features and improvements enjoyed by people using Windows 7 or later operating systems. It’s better than nothing, but if you want true online protection, we recommend upgrading to a more recent version of Windows with better Avast compatibility.

Is Windows Defender available for XP?

Unfortunately, Windows Defender is not built into Windows XP, nor is it included in installation. Rather, you would need to download Microsoft Security Essentials for first-party protection, which is both outdated and offers only an extremely basic level of security. We highly recommend using a third-party antivirus to protect your Windows XP PC.

What makes Avast one of the best antivirus apps for Windows XP?

Avast is one of the best antivirus apps for Windows XP, even if we’re not technically supporting it. For one, we’re one of the few remaining Windows XP antiviruses still offering a product with up-to-date virus definitions, which means we can still keep you safe from the latest, most dangerous online threats. Additionally, we’re one of the most trusted Windows antivirus regardless of the operating system you’re currently using. Finally, our antivirus comes with advanced features, such as rootkit scanning and removal, and tools that remove adware from your system.

What will happen to my antivirus if I upgrade my OS from Windows XP?

We fully encourage you to upgrade your Windows XP: regardless of which antivirus you use, your data will get better protection with a more up-to-date operating system, like Windows 10.

However, if you do choose to upgrade from Windows XP, you will need to uninstall and reinstall your antivirus software, which you can do for free. Useful if you’re planning to migrate to Windows 10 and you want to use Avast Antivirus for Windows 10. If you have a paid version of our product, Avast Premium Security, you will need to input the activation code again to retain your paid features.