Need to protect your PC with Windows?

Avast is the most-trusted antivirus brand globally. We protect over 200 million PCs, Macs, and Android devices - more than any other brand. Download your Avast today.

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Which level of protection suits you best?


Avast Free Antivirus


Avast Internet Security


Avast Premier

Download Free Antivirus if you want just essential protection. But if you want security against threats such as money fraud or targeted hacker attacks, try Internet Security or Premier.

Avast Free Antivirus Avast Internet Security Avast Premier
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Free 30-day trial


Free 30-day trial

Intelligent Antivirus Keep calm, and let the most-trusted antivirus protect you from all attacks. yes yes yes yes
Browser Cleanup Remove annoying browser toolbars and restore your preferred search engine. yes yes yes yes
Home Network Security Spot exposures on your network to prevent attacks on your router and other devices. yes yes yes yes
Smart Scan Run a one-click scan for threats, updates, network security, and PC performance. yes yes yes yes
SecureDNS Protect yourself from fake websites that collect your login data.   yes yes yes
Sandbox Test Space Safely run apps and open files you’re unsure about.   yes yes yes
Anti-Spam Know which emails are spam before you open them.     yes yes
SafeZone Bank, shop, and pay bills safely online.     yes yes
Firewall Make your computer invisible to hackers.     yes yes
Automatic Software Updater Keep all your software up-to-date with the latest patches.       yes
Data Shredder Delete does not truly delete. Military-grade data shredding removes files forever.       yes
Support Need help? Besides phone support, we are also here for you online. Online self-service Email support Email support Email support
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Free 30-day trial


Free 30-day trial


The most popular antivirus family!

Millions and millions of desktop and mobile devices protected

Now that we protect around 200 million active devices on all inhabited continents, we are thinking of how to expand to Antarctica. Negotiations with local penguins are underway.

Quarter century of computer-security making

In 2013, Avast celebrates 25 years! In all that we do, we’re committed to the trust and satisfaction of our customers. And our customers’ loyalty gives us great motivation to innovate and drive security further. Should Avast ever not meet your expectations, remember that all our products come with a 30-day, no-question, money-back guarantee.

Experts frequently certify and award us

We hate bragging, but we can see you insist! We get awarded and certified often, by numerous independent, industry-related organizations and testing agencies. They praise us for the virus detection capabilities of our software, as well as for not slowing down your PC.