"Avira Free Security for Windows is a powerful security solution that protects Windows systems against malware, phishing and rootkits, and improves privacy and performance with its integrated tools, settings, and browser extensions."
Download Avira Free Security
Everything you need for a secure, private, and fast digital life.
- Protects your personal data from scams, spies, and ransomware
- Encrypts and anonymizes your web browsing with free VPN
- Cleans your system and speeds you up
Everything you need to say goodbye to scammers and hackers
Protects you against all online threats, including malicious websites, ransomware, and spyware.
Browser tracking blocker
Prevents thousands of ad networks from tracking you across websites.
Secures and anonymizes your online activities (browsing, chats, emails, etc.)*
Secures your online accounts with strong and unique passwords that you don't need to remember.
Protects you from scams on social networks and in your inbox, including those about COVID-19.
Improves your PC's performance, speeds you up and accelerates your system starts.
Helps you update your OS, outdated apps and drivers for more security and better performance.
Wipes your digital traces from browsers and apps - and helps prevent Windows from tracking you.
Award-winning tech relied on by 500 million users and Fortune 500 companies.
Top anti-ransomware protection
So much more than just another antivirus
"A great security software that will protect you from major threats with little use of system resources. It also has many more features than some of its competitors: besides being a reliable antivirus it protects your privacy thanks to its free VPN and has a tool that helps you keep your PC clean of unnecessary files. If you're looking for an all-in-one solution that offers you protection, privacy and smoother computer use, Avira Free Security is an excellent choice."
Rated 5/5 by the editor
"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."
Rated 5/5 by the Editor.
"Avira aims to protect the online world by providing security expertise and advanced antivirus software to more than 500 million customers. The company’s people-first philosophy is built on a foundation of credibility and transparency, ensuring that ethics guide all decision-making."
Rated 5/5 by the editor.
Take our product tour
Click the icons on the left and center to learn more about Avira Free Security's features and benefits
You are protected
Last update: 10 minutes ago
Click on the blue ⓘ above and smart scan below for more details
Full virus scan
Scan your entire device for threats
Create, run, and schedule scans to protect your entire system from viruses, malware, and other common threats.
See your security status and set up your Antivirus
If you have special requirements, you can choose to customize and tweak all security features to your liking.
Repair or delete unsafe files
We automatically quarantine high-risk files to prevent them from causing harm. Don’t worry—you’ll still have the option to view and restore quarantined files.
Fix security risks in your apps
Update outdated and vulnerable apps easily with one click. You’ll never need to manually update an app again (thank goodness).
Block hackers and other threats
Block open ports through which hackers and malware might have been able to exploit.
Avoid tracking and block ads on Chrome and Firefox
Our browser enhancements protect you from phishing attempts, harmful websites, unwanted software downloads, and annoying ads. They also block hidden trackers that collect information about your search and browsing history.
Connect to the Internet anonymously
Encrypt your communications, surf anonymously, and bypass web restrictions to gain access to all the online content you love—on every device.
Manage passwords safely and easily
Use our onboard Password Manager to keep track of all your passwords. Generate and securely store unhackable passwords. Sync them across all your devices for access anytime, anywhere. You can even enable automatic logins to your favorite websites.
Erase sensitive data securely
Delete files for good, so that nobody can ever restore them.
Prevent Windows and apps from sharing your data
Stop Windows and other programs from collecting data about you and solve over 200 other privacy issues with a single click.
Free up space on your device
Need more space for all those photos? Give yourself the gift of more storage with just a single click to delete junk files, traces of your online activities, and invalid registry entries.
Start your device faster
Sick of having a slow device? Use this handy feature to monitor the programs that start on boot and remove the ones you don’t need.
Get a long-lasting battery
Feeling drained? Use our convenient tool to optimize and prolong your battery life.
Make your connected devices run smoothly
Is your system slow or troublesome? Outdated device drivers could be the reason. With this handy feature, you can automatically update drivers to their latest and recommended versions.
Get rid of double files
Are you running out of space (again)? Find duplicate photos and files and instantly remove them to free up space.
Privacy over profit
Avira has been protecting people for over 30 years. We offer free solutions because we believe privacy is a right, not a privilege. We don't sell your data, nor do we share it with 3rd parties such as government, Big Tech or advertising networks. We create software to keep you safe online - and protect your privacy against those who would monetize it.