Avira Free Antivirus for Windows
Award-winning protection, and free forever
- Top antivirus: blocks spyware, adware, ransomware, etc.
- Real-time protection & updates
- Light and fast: doesn’t slow down your PC
Award-winning tech relied on by 500 million users and Fortune 500 companies.
Top anti-ransomware protection
Real-time protection & repair
We protect you from billions of malware attacks annually, including against ransomware, Trojans, worms, viruses, and more. In addition to virus scans, our antivirus software includes advanced repair functionalities, fixing over 90 million files last year.
Real-time updates via the cloud
Stronger together: every secured device is as a sensor, which detects emerging, never-seen-before attacks. As soon as a new threat is identified, all our customers are immediately immunized against it, protecting millions within minutes.
Light and fast
Avira has one of the smallest footprints in the industry – with virus definition updates 2-5 lighter than most other antivirus products. Unlike many others, our protection doesn’t slow you down nor hog your system’s resources.
The best antivirus protection
With over 30 years of security experience, Avira offers superior detection, with additional web protection and repair capabilities. And as a German company, we don’t track what you do or sell your data to third parties.
AND RECOMMENDED BY THE INDUSTRY
“Avira Free Security is the latest evolution of the modern antivirus solution. In its basic form, it brings forth one of the best antivirus engines, a VPN, and a lot of other efficient goodies that will have a big impact on protecting your privacy and even ensure that your computer is running as it should.”
There’s safety in numbers
The latest technologies
Detects and blocks malware (viruses, ransomware, banker trojans, etc.)
Our automated, intelligent learning system protects you against new and evolving threats.
Identifies potentially unwanted applications hidden within legitimate software.
Blocks harmful websites before they load.
Prevents intrusive and malicious ads, banners, and pop-ups from loading.
Browser Tracking Blocker
Stops companies from monitoring you online.
Saves you money while you shop.
Microsoft Windows 7 Service Pack 1 or above with the newest updates, hotfixes, and service packs installed
2 GB of RAM or more
Disk SpaceMinimum 2 GB of free disk space (additional space for temporary and quarantine files needed)
CPU typeIntel Pentium 4 / AMD Athlon 64 Processor or faster (with support for the SSE2 instructions set)
Browser:Internet Explorer 11 or newer
To install, you’ll need administrator rights, an internet connection, and a web browser. For automatic antivirus updates and optimal malware detection, you’ll need an internet connection
The best free antivirus for Windows, plus the fastest and safest browser
The Opera browser is integrated into Avira Free Antivirus.
Avira's browser applications are optimized for Opera. We recommend using Opera as your default browser for the best browsing experience.*
*If you do not wish to make Opera as your default browser, you can easily change the configuration or even uninstall it. Find out more.
Opera is a fast, lightweight browser with unique features:
- Integrated ad blocker
- Customizable speed dials
- Search for open tabs
- Battery saver
- Integrated messengers