Protect your Windows 10 PC with Avast Free Antivirus
The most trusted antivirus in the world is fully compatible with Windows 10.
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Award-winning antivirus for Windows 10
Avast has earned many accolades, but the best reward is the loyalty of our 435 million users. We enjoy serving the largest community of any antivirus company in the world — and we’re thrilled to continue protect you when you upgrade your PC to Windows 10.
The best choice for your Windows 10 PC
Protection that goes above and beyond
Official partners with Microsoft
No slowing you down
It’s free forever
Around-the-world, around-the-clock protection
We’re proud to protect millions of Windows 10 PCs. But you don’t have to take our word for it. Check to see how many PCs we’ve protected this week alone:
Avast prevented virus attacks on Windows 10 PCs in the past week.
Avast prevented virus attacks on Windows 10 PCs in the United States just last week.
The United States’ Windows 10 PCs are the third most attacked in the world.
The number of attacks prevented against Windows 10 PCs in the past 30 weeks
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 people have spoken
How to install Avast Antivirus on Windows 10
You may still be wondering...
What is the best way to protect Windows 10?
Why use antivirus software on Windows 10?
Is Windows Defender enough to protect my PC?
Will Avast have any negative impact on the performance of my Windows 10 PC?
Visit our Support Center for more FAQs