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Protect your Windows 10 PC with Avast Free Antivirus

The most trusted antivirus in the world is fully compatible with Windows 10.

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Our users love Avast Free Antivirus for Windows 10

5

people rated us 4.8/5

Award-winning antivirus for Windows 10

Avast has earned many accolades, but the best reward is the loyalty of our 435 million users. We enjoy serving the largest community of any antivirus company in the world — and we’re thrilled to continue protect you when you upgrade your PC to Windows 10.

5

The most downloaded software

5

Best Free Anti-malware

5

2020 Top Rated product

The best choice for your Windows 10 PC

Protection that goes above and beyond
Windows 10 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, Do Not Disturb Mode, and more.
Official partners with Microsoft
With Avast and Microsoft in your corner, there’s not much that can get in your way. When Microsoft supports Avast Antivirus on all Windows 10 machines, it sends a 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
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It’s free forever

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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 behavior shield, remote assistance, browser cleaning and more — yep, you guessed it — completely free.

Around-the-world, around-the-clock protection

We’re proud to protect millions of Windows 10 PCs. But you don’t have to take our word for it. Check to see how many PCs we’ve protected this week alone:
Avast prevented virus attacks on Windows 10 PCs in the past week.
 Avast prevented virus attacks on Windows 10 PCs in the United States just last week.
 The United States’ Windows 10 PCs are the third most attacked in the world.

The number of attacks prevented against Windows 10 PCs in the past 30 weeks

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.

Very nice! It saved me from a spion virus that was stealing my passwords!

Tim

I feel secure and have peace of mind knowing I am safe. Thank you.

Steven

Awesome! In less than 30 days of using Avast, I could tell we were going to have an even longer relationship! No slowdowns, no malware, and no flaws in general, great job!

Michael

I’ve been using Avast since almost 2009... since then I've never turned to any other antivirus. Don't take my word for it, just try it & see for yourself...

Soumik

It is the best antivirus ever created!

Ognjen

We’ve been using Avast for more than 10 years now. It’s amazing that you can get something as good as this for free.

Austin

Definitely the best antivirus & anti-malware product out on the market. I recommended it to my family and friends!

Bray

It’s the best antivirus ever. I strongly recommend it.

Siyabonga

Excellent antivirus program. I’ve been using this program for 5-6 years without a single issue.

Norm

Hats off to the top notch features Avast provides. My favorite antivirus of all time.

Salman

Great product, Never got a virus since I started using it several years ago.

David

The best free antivirus no doubt. I’ve been using it since 2006 till now without any issues or viruses on my machine.

Sanjeev

The best antivirus for Windows 10.

Shrish

My favourite antivirus because of its high security and no slow down. Thanks.

3xper'

The best antivirus.

John

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How to install Avast Antivirus on Windows 10

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To start using Avast, just follow these easy steps:
Download the installer by clicking here.
Right-click the installer and click “run as administrator”.
Click “Install”.
When the progress bar vanishes, your PC is protected.
And that's it! Your PC is 100% secure.

You may still be wondering...

Visit our Support Center for more FAQs

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