Avast Free Antivirus
Essential protection that’s light, powerful, and completely free
Avast Free Antivirus
Easy to install,
effortless to use
What else is 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.
Scan your home network for threats, see who’s using it, and connect safely every single time.
Block pop-ups and other interruptions when gaming, watching movies, or presenting in fullscreen.
Stop ransomware attacks and ensure your personal files, photos, and documents can’t be held hostage.
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.
Over 435 million users worldwide trust Avast
Here’s what users say about it:
Is There a 100% Free Antivirus?
Yes, there are various free antivirus software, although not all of them will provide you with full protection. Avast Free Antivirus is completely free and offers all the security you need.
Why is Avast one of the best free antivirus solutions?
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 powerful 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.
Is Avast Antivirus Really Free?
Avast Free Antivirus really is free — you’ll never need to pay for it and it’ll provide you with essential online security and protection. If you’re looking for more security and privacy features, our Avast Premium Security software is the right product for you.
How does Avast Free Antivirus protect against so many types of threats?
Trusted by over 435 million users around the world, Avast uses advanced machine learning techniques to protect against ransomware attacks and other emerging threats. Avast Free Antivirus software detects, blocks, and removes all types of malware — viruses, adware, spyware, Trojans and more. You’ll also get security for your Wi-Fi network and real-time defense against phishing attacks, unsafe websites and computer exploits.
Why is Avast Free Antivirus even better than Windows Defender?
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 — Over 435 million users worldwide trust Avast.
How does Avast Free Antivirus affect performance?
Avast Free Antivirus keeps your PC safe in real time without slowing it down. Get world-class protection against malware, phishing attacks, Wi-Fi intrusions, and other threats with our advanced cybersecurity tool that’s both comprehensive and light on your system’s resources.
Looking for a performance boost? Speed up your PC and get rid of unnecessary files with Avast Cleanup Premium, or protect and optimize your PC all at the same time with Avast Ultimate.
How do I detect and remove viruses and other malware?
Avast Free Antivirus detects and blocks all types of malware in real time to prevent them from infecting your computer. At the same time, it scans your PC to remove viruses and other malware automatically before they can do real damage.
Feeling up for a challenge? You can also try to remove viruses and malware the old fashioned way.
How to install
2. Open the file
3. Install the file
Fast, light and powerful free protection.
It’s just a click away
Get security tips for your PC, straight from the experts
Webcam hacking and extortion is real. Find out if your webcam has been hacked, how to protect yourself and avoid living your own 'Black Mirror' nightmare.
Spam text messages are the ultimate nuisance. Here's how to block unwanted texts on Android & iPhone and stop spam before it starts.
Concerned about smart TV cameras and tracking? Find out if your Smart TV is spying on you and how to disable built-in cameras and voice-recording features.
Scareware is designed to trick users into downloading malicious software. Here's how to identify fake virus warning popups and how to remove scareware.
The Stuxnet worm: find out who created this digital weapon, how it was first used, how Stuxnet malware spreads, and how to protect against variants.
Want to remove spyware from an iPhone? Learn how to tell if someone is spying on your iPhone and how to find and remove iPhone spyware.
Find out what fake news is, how to identify fake news articles, and what common examples of fake news are, such as clickbait or biased news.
Closely monitor your CPU temperature to keep your device performing at its best. We'll show you how to check your CPU temperature on a Windows PC.