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Lighter, more powerful – and absolutely free
Cloud-light, award-winning free virus protection
Packed with the largest threat-detection network, machine-learning virus protection, easy password management and home network security that won’t slow down your PC.
Avast is recognized by the most important anti-malware institute.
“Scores high… an excellent choice for free antivirus protection”
Certified for 100% protection against 0-day threats.
Easy to install,
effortless to use
Avast Free Antivirus scans for security and performance issues and tells you how to fix things instantly.
It protects you in real-time by analyzing unknown files before they get to you. So relax: With Avast, you’re running the most trusted antivirus out there.
What’s inside 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.
Now uninterrupted NEW
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Find all those cracks which allow malware to slip in, from unsafe settings and passwords to suspicious add-ons and out-of-date software.
The world’s most trusted antivirus
But just don’t take our word for it.
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
Avast Free Antivirus
Fast, light and powerful free protection.
It’s just a click away
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