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Download free antivirus software for Windows 10 PC or laptop

Keep your PC or laptop safer from viruses and other malware. Boost your home Wi-Fi security. Help stop ransomware attacks. Download today and join millions of others. Get Avast Free Antivirus for Windows 10.
Also available for Mac, Android, and iOS
2021
Editors' Choice
2022
Top Rated Product
2023
Top Product
2023
Best Free Anti-Malware
Award-winning free antivirus
Easy to install and simple to use
Wi-Fi network security
30+ years of protecting our users

You get more than just Windows 10 antivirus

As we increasingly live our lives online, threats to our security and privacy have become more sophisticated. That’s why we’ve included some advanced tools alongside our powerful antivirus software for Windows 10.

Get protection that goes above and beyond
Windows 10 provides very basic protection but adding Avast’s antivirus software gives you powerful real-time protection against viruses and other malware, and it even includes advanced features, like home Wi-Fi security — all completely free.
Safely shop, bank, and browse
Keep your sensitive, personal, and financial information private and secure. Get alerts and block potentially fake or malicious websites, programs, and applications to help ensure nobody is stealing your data or infecting your PC or laptop with malware.
Stop ransomware attacks
Keep your sensitive information safe and for your eyes only. Secure your personal photos, files, and documents so hackers can’t access them, lock them, change them, or hold them hostage in ransomware attacks.
Easy to install, effortless to use
Installing Avast Free Antivirus for Windows 10 just takes moments, and it’s simple to use.

Clear interfaces and settings allow you to set and automate your security, so it’s always running quietly in the background, protecting you in real time, 24/7. And it’s always free — so give it a try now.

You can rely on Avast to protect you

Here’s why Avast is one of the most trusted, reliable, and experienced cybersecurity experts in the world.

Award-winning protection
We’re proud to offer our users world-class protection against cyberthreats, supported by the many awards our antivirus has earned.
Hundreds of millions of users
Our vast global user base means we have the largest threat detection network in the industry — so we catch new threats fast.
30+ years of experience
When it comes to creating an antivirus that protects you from all angles — we know exactly what it takes.

It’s free forever

Get free virus protection for Windows 10, plus protection against other types of malware. We offer extra security features such as behavior shield, 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 PCs and laptops with our antivirus software. Our experts work 24/7 to keep you safe from virus attacks and other cybersecurity threats.

6.3 billion virus attacks prevented against Windows 10 PCs and laptops:

6.3 billion virus attacks prevented against Windows 10 PCs and laptops:

Check out these 5-star reviews from our customers:

“...earns excellent scores in our hands-on tests and independent lab tests...it offers much more than many competing commercial products...”
“Awarded Outstanding Security Product 2021 by AV-Comparatives.”
Avast Free Antivirus
Find and fix security issues with Windows fast
Avast’s antivirus scans for security and performance issues and helps you to fix them instantly. It also protects you in real time by analyzing unknown files long before they reach your Windows 10 PC. And it’s free — so give it a try.
Free download
Also available for Mac, Android, and iOS

Already have Avast? We’ve got you covered

If you’re planning on upgrading from older versions of Windows, such as XP, 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. The same process applies if you're upgrading to Windows 11.

You may still be wondering...