Avast Free Antivirus
Essential protection that’s light, powerful, and completely free
Avast antivirus is the proud winner of the prestigious 2020 Top Rated product award
Avast Free Antivirus
2020 Top Rated product
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.
Just a click of our fresh, new, easy-to-use interface checks everything from your passwords to your home network security.
now uninterrupted
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.
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.
Intelligent Antivirus
CyberCapture
Wi-Fi Inspector
Smart Scan
Layer upon layer of security
Avast Free Antivirus uses multiple layers of security to keep you safe from even the newest, never-seen-before threats.
The world’s most
trusted antivirus
But just don’t take our word for it.
Ryan R.
Eric S.
Daryl C.
FAQ
Why is Avast one of the best free antivirus solutions?
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.
How does Avast Free Antivirus protect against so many types of threats?
Why is Avast Free Antivirus even better than Windows Defender?
How does Avast Free Antivirus affect performance?
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?
Feeling up for a challenge? You can also try to remove viruses and malware the old fashioned way.
System requirements
Windows 10 compatible
Click this file to start
installing Avast
Almost done!
Follow these 3 easy steps to complete your Avast installation
Note: If your download did not start automatically, please click here.
Run the Avast installer
Click the downloaded file at the
top right corner of your screen.
Confirm the installation
Click "Yes" on the system dialog window to approve the start of your Avast installation.
Follow setup instructions
Click the button in the installer
window to begin installation.
Need help? Please call 855-745-3255
Get security tips for your PC, straight from the experts
A computer virus is a type of malware that can spread quickly between computers and other devices. Learn how viruses work and how to protect against them.
Want to learn about malware? Read this ultimate guide to find out what malware is, how it works, how it spreads and what you should do to protect yourself.
Have you noticed your Windows PC behaving strangely? Find out how to detect and remove viruses and other malware in this complete guide.
A macro virus is a computer virus written in the same macro language used for software programs. Find out its characteristics and how to remove a macro virus.
Looking for a definition of rootkits or rootkit removal advice? Learn what rootkits are, what they do, and how to find and remove rootkits here.
From Cyber Police to Article 161, Android devices have been hit by several major ransomware attacks. Learn how to remove ransomware from Android here.
Learn what tech support scams are, how they’re used to gain access to computers, and how to avoid becoming a victim of remote access scams.
Discover our top picks for the best PC cleaning and optimization tools for your Windows computer, both free and paid, and speed up your device the easy way.
