Protect your Windows PC with Avast Free Antivirus

The most trusted antivirus in the world is fully compatible with Windows.

Free download
Installs in seconds
99.6% detection rate
Automatic regular updates
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Award-winning antivirus for Windows

Avast has earned many accolades, but the best reward is the loyalty of our 400 million users. We enjoy serving the largest community of any antivirus company in the world — and we’re thrilled to be able to continue to protect you when you upgrade your PC to Windows 10.

The most downloaded software
The best-selling security software
Antivirus with lowest impact on PC performance

The best choice for your Windows PC

Protection that goes above and beyond

Windows provides very basic protection. Avast Antivirus secures not only your PC, but your entire home network as well — and it comes with advanced features such as Software Updater, Passwords and more.

Official partners with Microsoft

With Microsoft and Avast in your corner, there’s not much that can get in your way. With Microsoft supporting Avast Antivirus to work on all Windows machines, it sends one clear message: we’re respected for what we do. That’s why industry experts like PC Magazine and PC Advisor rate us highly too.

No slowing you down

We’re proud to be called the "Antivirus with the lowest impact on PC performance” by AV Comparatives. Whether you use your PC for gaming or for work, Avast gives you the biggest protection in the smallest package possible

It’s free forever

Avast provides all the essential antivirus protection you need for your Windows 10 PC. But we don’t stop there. We offer extra security features such as a password manager, remote assistance, browser cleaning and more — yep, you guessed it — completely free.

Already have Avast? We’ve got you covered

If you’re planning on upgrading from older versions of Windows, such as XP, Vista, 7, 8 or 8.1, we’re ready to keep your new Windows 10 PC virus-free. Just make sure you’re running the latest version of Avast before you upgrade your machine, and when you finish the transition to Windows 10, you’ll find us there, right where you left us, ready to protect your PC and everything you hold dear in it.

System Requirements

It doesn’t take much to have a machine protected by Avast. All you need is a PC with 256 MB+ RAM and 1.5 GB of hard disk space. If your Windows 10 PC has that (which it very likely should), you’ll be good to go.

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
5

It's clean, easy, and works.

Avast Free Antivirus for Windows 10
4

It's very easy program

Avast Free Antivirus for Windows 10
5

easy to used < its the best

Avast Free Antivirus for Windows 10
5

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
5

easy to used < its the best

Avast Free Antivirus for Windows 10
5

easy to use and download

Avast Free Antivirus for Windows 10
5

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
5

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
5

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

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