Protecting 400 million people.
Protecting 400 million people.
The world’s most trusted Windows antivirus is ready to keep your data safe.
Free download
Using cloud-based processing, our antivirus keeps your computer safe without slowing it down. In fact, with our powerful PC optimizing tool Avast Cleanup, we can help things run even faster. Between keeping your PC safe and running at its best, Avast is a win-win for Windows users.
AV Comparatives tested Avast’s ability to stop malware from infecting Windows PCs and the results were clear: we stopped 100% of the zero-day malware they threw at us. Combined with our suite of security features, like Firewall and Sandbox, no threat, new or old, will ever put your data or your Windows PC at risk.
As one of Microsoft's official consumer security software providers, Avast is trusted by 400 million people around the world as their free antivirus of choice in an increasingly dangerous online world.
You, and the data you need to protect, are the reason we’re here. Be sure to let us know how we’re doing, and how we can improve, so we can continue to keep what you hold dear protected from online threats.
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