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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 435 million users worldwide trust Avast to keep them safe.

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Using Windows 8.1? Download this instead

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Using Windows Vista? Download this instead

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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 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.

Easy to install,
effortless to use

It only takes moments to install Avast Free Antivirus and the software is 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.

It’s free forever

Get advanced Windows 10 antivirus protection against online threats like viruses and other malware. But we don’t stop there. 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. 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 prevented 6 307 725 571 virus attacks on Windows 10 PCs in the United States just last week.
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 The United States’ Windows 10 PCs are the third most attacked in the world.

Number of attacks prevented against Windows 10 PCs over recent months:

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 1
1. Download
Download the file from our page.
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...

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.

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.
Avast SecureLine VPN
Encrypts your internet connection with a click of a button for true online privacy.

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