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

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Enjoy a multi-award-winner

We have received 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
Top-rated performance test - doesn't slow you down
Avira Free Antivirus for Windows Full Scan Screenshot

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.

Avira Free Antivirus for Windows Update Screenshot

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.

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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.

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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.

4.5/5 - Excellent

19,000+ reviews


"Avira plugs the holes Windows Defender often leaves open"


What’s inside?
The latest technologies

Antivirus Scanner

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


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.

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


Discover Antivirus Profor Mac and Windows

System Requirements

Your device is not compatible

Operating systems

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


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)


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

What’s inside Avira Free Antivirus?

All the essentials to ensure your security, privacy, and performance.

All the security essentials

Whatever you use and whatever you do, keep it secure

Avira Free Security Suite protects your personal data, your software, your browsing, your searches, and even your home network.


Protects you in real time against malware and online threats.

Software Updater

Keeps your software and drivers up to date.

Browser Safety

Blocks infected websites, browser trackers, and intrusive ads.

Safe Shopping

Finds secure, money-saving deals and coupons when you’re shopping.

Home Guard

Scans your network for vulnerabilities and helps you fix them.

All the privacy essentials

Be anonymous in everything you do


Avira Free Security Suite helps you browse anonymously, encrypts your web traffic, prevents companies from collecting your private data, and keeps your passwords secure and for your eyes only.

Phantom VPN

Encrypts and anonymizes your web traffic (500 MB/month)

Privacy Pal

Optimizes over 200 privacy settings with just a few clicks

Password Manager

Creates & remembers unhackable passwords for each account

Get peak performance

Your PC running as it should


You deserve the best digital experience. Get greater speed and more memory from all your devices. All with just one click.

System Speedup

Cleans junk files, speeds up your boot time, and reduces lags.

Download award-winning antivirus for free