Protect your Windows 10 PC with Avast Free Antivirus

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

Free download
Jump to our products

Award-winning antivirus for Windows 10

Avast has earned many accolades, but the best reward is the loyalty of our 230 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 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, 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 10 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.

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 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.

See what other people say about us

After all, we’re here to serve you.

1/19/2016 | Windows 10 store
All devices covered!

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

4/13/2016 | Windows 10 store
Best Anti-Virus Ever

This program has never let me down in 10 years

4/23/2016 | Windows 10 store
The Best

I have been using the free version Avast for many years and , it works absolutely great hence the 5 star. I absolutely recommend.

Janice Marie Norcross
1/25/2016 | TrustPilot
Avast, security across

Avast provided a uniform secure level of protection across my entire environment of Windows 10, latest Android, and on my wife's IPad Air 2. They also provides a handy little android application that helps keep your available memory, available.

Isaac Gibson
4/22/2016 | TrustPilot
Anti Virus - the best.

5 stars: Excellent! I would recommend Avast to anyone. Best Regards

Mark Sebald
4/17/2016 | TrustPilot
Love it!

Since installing Avast, I have felt, and been, very safe using the web, and downloading files. Avast even scans images downloaded, prior to letting you open them. I do a lot of graphics and use images on line to achieve my end result. No more worries!

3/5/2016 | Amazon
Avast is an excellent Antivirus software

Avast is an excellent Antivirus software. A lot better than the antivirus offered by Microsoft. I have used the Microsoft antivirus, Avira antivirus and Avast antivirus. My preferred antivirus software, by far, is Avast. I highly recommend it.

Jethro Wright
3/3/2016 | Amazon
A Good AV Package !

Has a reasonable RAM footprint, and i especially like the feature where it monitors the PCs most vulnerable software and will upgrade them by a trusted source, as opposed to people esp novices seeing random popups, etc urging them upgrade Flash etc and being scammed into downloading malware.

Amazon Customer
3/29/2016 | Amazon
Best antivirus is the best

I used to use AVG, and then I was told about Avast by a friend. AVG is good, Avast is much better. Definitely better than Norton and McAffee and by a long shot better than PCmatic (PCmatic is a blatant scam). Get Avast, it is by far the best anti-virus I've ever used.

How to install Avast Antivirus on Windows 10

To start using Avast, just follow these easy steps:

1 Download the installer by clicking here.

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

3 Click “Install”.

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

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


Why use antivirus software on Windows 10?

Windows 10’s security is basic and oftentimes insufficient to protect you from every danger online. Avast Antivirus is more than equal to the task, however, and can offer your PC full protection without compromising its performance. Additionally, we offer features that your built-in protection simply doesn’t have, such as a password manager and remote assistance.

Is Windows Defender enough to protect my PC?

No. Hackers and programmers of malware become intimately familiar with built-in antivirus software, like Windows Defender, and they design their programs to work around them. Additionally, the built-in software gets updated less frequently than dedicated antivirus software, so it can’t protect you from the latest threats. While it will protect you from certain dangers, for top-of-the-line, full protection, you need Avast.

Will Avast have any negative impact on the performance of my Windows 10 PC?

Not at all. Avast is designed from the ground up to be lightweight and accessible, and to protect your PC without leaving so much as a dent in your computer’s performance. Just install it and enjoy a PC free from malware and other threats.

Share this article