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
2022
Top Rated Product
Get a free, award-winning Windows 10 antivirus
Free download
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:
Check out these 5-star reviews from our customers:
I have used Avast™ for many years. The reason is very simple. You offer a great free version that actually works. This lets me afford the other amazing service's you offer when needed like Avast™ clean-up.
James M.
29 Aug 2023
5
I had recommended Avast™ to a co-working friend because he said his computer was running slow. He said he ran the anti-virus twice and his computer speed improved.
Michael S.
28 Aug 2023
4
Avast™ free antivirus does what it is supposed to do without much fuss. Though I would prefer fewer popups.
Joshua W.
25 Sep 2023
4
“...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.
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...
FAQs
Download our award-winning, free antivirus for Windows 10. Avast Free Antivirus protects you against all types of malware, including viruses and ransomware. For complete online privacy, use our VPN for Windows 10.
Windows 10’s built-in security is basic and oftentimes insufficient to protect you from every online threat. However, Avast Free Antivirus is more than equal to the task, and can offer your PC or laptop full protection without compromising performance. Additionally, we offer features that your built-in protection simply doesn’t have, such as ransomware removal and advanced rootkit scanning.
No. Hackers and malware programmers become intimately familiar with built-in antivirus software, like Windows Defender, and they design their programs to work around them. Additionally, the built-in software gets updated less frequently than dedicated antivirus software, so it can’t protect you from the latest online threats. While it will offer protection from certain dangers, the limitations of Windows Defender means that for top-of-the-line, full protection, you need Avast.
Not at all. Avast’s top-rated Windows antivirus is designed from the ground up to be lightweight and accessible, and to protect your PC without leaving so much as a dent in your computer’s performance. Just install it and enjoy a PC free from malware and other threats.
Ensure you upgrade Avast Free Antivirus to the latest version and restart your system after the upgrade. To upgrade, follow the steps in this article. Multiple reboots may sometimes be necessary on some systems.
Finding the best free antivirus for Windows is ultimately down to your personal choice. But Avast Free Antivirus could be ideal if you’re looking for free, award-winning cyberthreat protection that gives you handy extra security features too.
Our free app can help secure your home Wi-Fi and connected devices. It also gives you safer everyday online browsing and emailing. Plus, it can help monitor app behavior on your PC or laptop for malware-related activity, identify an issue, and deal with it.
Visit our Support Center for more FAQs
How to install
To help protect your Windows PC or laptop, follow these 3 easy steps:
Step 1
1. Download our app
Download now
Step 2
2. Open the file
Step 3
3. Install the file
Run the installer and follow the simple instructions.
System requirements
Windows 10 and Windows 11 compatible
PC with Windows 11, 10, 8.1, 8, or 7 (both the 32 and 64-bit versions, excluding Starter and RT editions), 1 GB RAM and 2 GB of hard disk space.
Mac running macOS 10.13 (High Sierra) or later.
Android phone or tablet running operating system Google Android 6.0 (Marshmallow, API 23) or higher.
iPhone or iPad running iOS 12.0 or higher.
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