Free antivirus is your first step to online freedom
We believe everyone has the right to be safe online, which is why we offer our award-winning free antivirus to millions of people around the world.
Creating a safer world
Complete protection for all your devices
Our most advanced protection is your toughest defense against viruses, ransomware, malware, zero-day threats, home Wi-Fi network vulnerabilities, and more.
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Choose a VPN for true online privacy
Advertisers tracking your every move, content blockers making it difficult to view your favorite sites, and hackers diving into your search history and bank accounts on free public Wi-Fi are blocked with Avast’s Virtual Private Network (VPN).
Expert tips and guides about digital security and privacy
Computer and software exploits are some of the most significant threats to your security. Discover what exploits are, how they work, and how to protect yourself.
Find out everything you need to know to build your own gaming PC, including component guides and step-by-step instructions. Boost your rig & save money.
Trying to change your default browser in Windows? Learn how to make Chrome your default browser, and find out how to switch from one browser to another.
SQL injection is a website attack where hackers insert SQL code into a site to access its database. Learn how SQL injection works and how to prevent SQLI.
Discover the best iPhone security apps, from private browsing to email and messaging encryption. Safeguard your iPhone privacy today.
In 2017, two catastrophic security flaws shocked analysts everywhere: Meltdown and Spectre. But what exactly are they and is the threat real? Find out here.
Even your iPhone and iPad aren't immune to ads, online trackers, and pop-ups. Upgrade your device with the best ad and pop-up blockers for iOS.
Any PC user should check for new graphics drivers once a month to boost speed and get more features for free. Here’s why and how.
Drivers are the most common cause of PC crashes. Find out why outdated drivers cause your computer to keep crashing, then learn how to fix your drivers.
Keeping people safe & secure around the world
Using real-time intelligence from over 400 million Avast users, we prevent more than 66 million threats every day.
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1. Download
Download the Avast installation file.
2. Open the file
Open the file to install your Avast application.
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