Avast Free Antivirus for Windows 10
Over 435 million users worldwide trust Avast. Get our free, award-winning protection against viruses and other malware for Windows 10 now.
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Using Windows 8.1? Download this instead
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Using Windows 7? Download this instead
Using Windows XP? Download this instead
Using Windows Vista? Download this instead
Get the best Windows 10 antivirus
Protection that goes above and beyond
Official partners with Microsoft
No slowing you down
Free 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.
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.