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

Editors' rating:

Spectacular

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Enjoy a multi-award-winner

Top awards for our protection, performance, and repair capabilities.

Top product award for our protection, performance, and usability
Outstanding protection in real-world situations
Top award for our anti-ransomware protection technology

Real-time protection & repair

We protect you from billions of malware attacks annually, including against ransomware, Trojans, worms, viruses, and more. Our antivirus scanner also 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.

Made in Germany.
Downloaded by millions.

8.4/10 - Great

12,800+ reviews

AND RECOMMENDED BY THE INDUSTRY

"Avira plugs the holes Windows Defender often leaves open"

top10reviews.com

What’s inside?
The latest technologies

Antivirus Scanner

Detects and blocks malware (viruses, ransomware, banker trojans, etc.)

NightVision

Our automated, intelligent learning system protects you against new and evolving threats.

PUA Shield

Identifies potentially unwanted applications hidden within legitimate software.

Safe Browsing*

Blocks harmful websites before they load.

Ad Blocker*

Prevents intrusive and malicious ads, banners, and pop-ups from loading.

Browser Tracking Blocker*

Stops companies from monitoring you online.

Price Comparison*

Saves you money while you shop.

*Included with Avira Browser Safety — a browser extension for Chrome, Firefox, Opera and Internet Explorer.

Want even more?
Discover Avira Antivirus Pro.

Avira Free Antivirus

Avira Antivirus Pro

$44.99
Buy Now
1 PC / Yearly subscription. Learn more

Antivirus scanner (protects you from ransomware, viruses, Trojans, etc.)

Repairs infected files

Doesn’t slow you down

Blocks infected sites*

Blocks phishing attacks (social networks, email, etc.)*

Blocks potentially unwanted programs

Scans downloads, torrents & cloud storage

Scans email attachments

Scans USB devices

No Ads

24/7 Customer Support

Includes our premium Android app

Avira Free Antivirus

Avira Antivirus Pro

$44.99
Buy Now
1 PC / Yearly subscription.

*Included with Avira Browser Safety — a browser extension for Chrome, Firefox, and Opera

There’s safety in numbers

100 million+

internet-attached devices make up our world-wide sensor network

8.4 million

attacks a day are blocked on average

97.5 million

phishing attacks were stopped in the last 12 months alone

17 million

ransomware attempts were thwarted in the last year

Laptop, smartphone or tablet?

Secure all your devices with Avira

LOOKING FOR PREMIUM ANTIVIRUS?

Discover Antivirus Pro for Mac and Windows

System Requirements

Operating systems

Microsoft Windows 7 Service Pack 1 or higher with the newest updates, hotfixes, and service packs installed 

RAM

2 GB of RAM or more

Disk space

Minimum 2 GB of free disk space (additional space for temporary and quarantine files needed) 

CPU type

Intel Pentium 4 / AMD Athlon 64 Processor or faster (with support for the SSE2 instructions set)

Browser

Internet Explorer 8 or newer

Additional requirements

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

Download award-winning antivirus for free