Our award-winning antivirus secures you against online threats.

1. Free Antivirus for PC We recommend using a comprehensive antivirus solution to protect your Windows PCs. Although Windows Defender is built into Windows 10, its anti-malware capabilities may not be sufficient to combat ever-evolving threats.
2. Download Free Antivirus optimized for Windows 10. Protects your PC against malware, viruses, Trojans, and more.

Protect your PC against online threats

With the industry’s leading detection rates, Avira Free Antivirus protects you from viruses, worms, Trojans, ransomware, spyware, adware, and rootkits.

Install free antivirus from Microsoft and enable recommended settings to ensure you are ready for the Internet. Install and enable Acrobat Reader DC software for your Windows PC to easily view, print, and comment on PDF files. Windows Firewall comes free with Windows and is the default firewall to keep your PC safe. Download Kaspersky Security Cloud Free antivirus software for PC, Android, and iOS and protect yourself against viruses, ransomware, spyware, phishing, Trojans, & dangerous websites. Get 100% free powerful virus protection for all your devices!

Top protection, performance, and usability on Windows 10

With a low system impact, near-perfect detection rates, and intuitive interface, Avira Free Antivirus delivers a smooth-running solution that doesn’t slow you down and always has your back.

Compare Defender with Avira

Windows Defender offers essential protection against malware. Avira Free Antivirus delivers outstanding security with intelligent learning algorithms and award-winning detection technology. With Avira, you’re protected in real time against both known and unknown threats.

Migrate smoothly towards Windows 10

Free Antivirus Software For Windows 10 Laptop

If you’re thinking of upgrading from Windows 7 or 8 to Windows 10, you can do so with Avira Free Antivirus, which is fully compatible with and optimized for all 3 operating systems.

The Best Free Antivirus Software For Windows 10

Enjoy a multi-award-winner

We have received top awards for our protection, performance, and repair capabilities.