Download free virus protection for Windows PC. Avast offers modern antivirus for today’s complex threats. Fast, simple, and 100% free. Try it today!
Essential protection that’s light, powerful, and completely free
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Avast Free Antivirus
2020 Top Rated product
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Cloud-based award-winning free virus protection
Packed with the largest threat-detection network, machine-learning virus protection, and home network security that won’t slow down your PC.
Easy to install,
effortless to use
Avast Free Antivirus scans your PC for threats in seconds, catching malware hidden on your system and erasing them easily. Then, you can relax knowing that our 24/7 scans will check every single file entering your PC to make sure they’re safe from all the malware out there — even 0-day threats.
What’s new with the latest version?
A beautifully intuitive interface, advanced application protection, a new passive mode for running multiple security products in parallel — and a little something for you gamers and movie buffs.
Designed for effortless security
Just a click of our fresh, new, easy-to-use interface checks everything from your passwords to your home network security.
Game or movie time,
We’ve renamed Game Mode and taught it some new tricks. Now called Do Not Disturb Mode, it blocks distracting popups whether you’re gaming, watching movies, or presenting in fullscreen.
Introducing Behavior Shield
We don’t just check your applications for malware. We now keep an eye on their behavior to make sure they don’t suddenly go rogue.
This is no run-of-the-mill free antivirus
On top of our latest features, we cover essential intelligent threat-detection and real-time protection with such a light touch on your PC, you never even know it’s there.
Detect and block viruses, malware, spyware, ransomware, and phishing. We use smart analytics to stop threats before they affect you.
Automatically send suspicious files for analysis in the cloud, and push a cure to all Avast users if it’s a threat.
Automatically detect weaknesses in your home Wi-Fi and strangers piggybacking on your network.
Find all those cracks that allow malware to slip in, from unsafe settings and passwords to suspicious add-ons and out-of-date software.
The world’s most
But just don’t take our word for it.
The UI for your software – amazing. Great work over the years. Can’t say enough good things!
Thank you, Avast, for the excellent work you do. I run your antivirus software on both my Mac OS X and my Windows machines. You have the best products on the market, period.
I’ve been using Avast for over a year and have found it one of the best free software protection devices on market.
Avast Free Antivirus combines cutting-edge, AI-driven cybersecurity with a massive threat-detection network of over 435 million users that lets us protect our entire community in real time against online threats whenever they appear.
Our industry-leading antivirus engine is just one of the many reasons why Avast Free Antivirus consistently earns high praise and top awards from PCMag, AV-Comparatives, AV-Test, and other independent experts. We have one of the best antivirus software solutions available, because we have the right antivirus protection for all your needs.
Now known as Microsoft Defender, Windows Defender isn’t enough to match leading third-party PC antivirus programs. While it’ll keep your computer relatively safe against most types of malware, its anti-phishing protection is limited to Microsoft Edge — you’ll need Avast Free Antivirus to protect you on other browsers like Chrome and Firefox. Microsoft Defender also doesn’t score quite as high with independent testing labs like AV-Comparatives. For comprehensive threat protection on your PC, go with Avast — the world’s most trusted antivirus.
Visit our Support Center for more FAQs
We’re not demanding. All you need is a PC with Windows 10, 8.1, 8 or 7*, 1 GB RAM and 2 GB of hard disk space. And that’s it.
* Both the 32- and 64-bit versions, excluding Starter and RT editions.
Windows 10 compatible
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