Download free antivirus software for Windows 10
Get Avast Free Antivirus, our free award-winning antivirus software. Protect your Windows 10 PC against viruses and other malware, plus strengthen your privacy. Over 400 million users worldwide trust Avast to keep them safe.
2021
Outstanding
Security
Product
Outstanding security product, 2021
•
Get it for free!
award-winning free antivirus
easy to install and simple to use
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 program gives you powerful real-time protection against viruses and other malware, and it even includes advanced features, like security for your home Wi-Fi network — 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 ensure you’re not allowing malware onto your device or giving your data to criminals.
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 for ransom.
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.
World-class protection
We’re proud to protect our users but we’re also proud of the many top awards our antivirus has earned.
30+ years of experience
When it comes to creating an antivirus that protects you from all angles — we know exactly what it takes.
435+ million users
Our vast global user base means we have the largest threat detection network in the industry — so we catch new threats fast.
Around-the-world, around-the-clock protection
We’re proud to protect millions of Windows PCs. But don’t just take our word for it — see the graph below which shows that Avast has prevented 6 307 725 571 virus attacks on Windows 10 PCs over recent months.
We’re proud to protect millions of Windows PCs. But don’t just take our word for it — see the graph below which shows that Avast has prevented 6 307 725 571 virus attacks on Windows 10 PCs over recent months.
Number of attacks prevented against Windows 10 PCs over recent months:
Here’s what our users say:
Very nice! It saved me from a spying virus that was stealing my passwords!
I feel secure and have peace of mind knowing I am safe. Thank you.
Awesome! In less than 30 days of using Avast, I could tell we were going to have an even longer relationship! No slowdowns, no malware, and no flaws in general, great job!
I’ve been using Avast since almost 2009... since then I've never turned to any other antivirus. Don't take my word for it, just try it & see for yourself...
It is the best antivirus ever created!
We’ve been using Avast for more than 10 years now. It’s amazing that you can get something as good as this for free.
Definitely the best antivirus & anti-malware product out on the market. I recommended it to my family and friends!
It’s the best antivirus ever. I strongly recommend it.
Excellent antivirus program. I’ve been using this program for 5-6 years without a single issue.
Hats off to the top notch features Avast provides. My favorite antivirus of all time.
Great product, Never got a virus since I started using it several years ago.
The best free antivirus no doubt. I’ve been using it since 2006 till now without any issues or viruses on my machine.
The best antivirus for Windows 10.
My favourite antivirus because of its high security and no slow down. Thanks.
“...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."
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, and when you finish the transition to Windows 10, you’ll find us there, right where you left us, ready to protect your PC and everything you hold dear in it. The same process applies if you're upgrading to Windows 11.
How to install
Get protected right away by following these 3 easy steps:
step 2
2. Open the file
Open the downloaded file and approve the installation.
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 10.12 (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.
You may still be wondering...
Windows 10’s security is basic and oftentimes insufficient to protect you from every danger online. However, Avast Antivirus is more than equal to the task and can offer your PC full protection without compromising its performance. Additionally, we offer features that your built-in protection simply doesn’t have, such as a Password Protection and remote assistance.
No. Hackers and programmers of malware 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 threats. While it will protect you from certain dangers, for top-of-the-line, full protection, you need Avast.
Not at all. Avast 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 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.
Visit our Support Center for more FAQs
You might be also interested in...
Sometimes you just need an individual tool for an individual purpose. Learn more about some of our privacy tools, below.
Free
Avast Secure Browser
Secure, private, and easy to use. A faster, free browser for all your devices.
Avast AntiTrack
Get advertisers off your back. Disguise your online identity for greater privacy.
Popular
Avast SecureLine VPN
Encrypts your internet connection with a click of a button for true online privacy.
Get security tips and advice straight from the experts
count: 10
The Ultimate Guide to Identity Theft
Identity theft is a growing threat in our interconnected digital world. Learn what identity theft is, what the warning signs are, and how to prevent it.
How to Protect Yourself From Identity Theft
Identity theft is a devastating crime that can turn your world, and your finances, upside down. Find out how you can take steps to protect your identity here.
How to Report Identity Theft
How do you report identity theft? If you think your identity has been stolen, find out how to report it to the FTC, the police, or the government.
How to Remove Personal Information From the Internet
What is personal information and how does it get online? Learn how to find and remove personal information from the internet.
What Is the Dark Web and How to Access It?
The dark web isn't indexed by search engines. Learn how people access the dark web and what they do on darknet browsers in our guide.
Everything You Need to Know About Dark Web Scanning
Worried your information has landed on the dark web? Learn about dark web scanners and what you can do if your email is found on the dark web.
How to Change Your Privacy Settings on Facebook
Find out how to change your privacy settings on Facebook, from limiting who can see your wall or photos to reducing app-related security issues.
What Is Doxxing, Is Doxxing Illegal, and How Do You Prevent It?
Doxxing, or doxing, is the release of someone's personal info without their consent. Find out how doxxing works and how to prevent it.
Home Title Theft – What You Need to Know
Find out everything you need to know about home title theft, including how to identify it and protect yourself against fraud and insurance scams.
What Does Google Do With Your Data?
Ever wondered what Google does with the data it collects on you? We've unpacked Google's privacy policy here.
