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Free Anti-Ransomware Protection & Removal Tool
Remove ransomware and protect your Windows, Android, Mac, or iOS device with Avast One — the award-winning, 100% free anti-ransomware tool. Stop dangerous ransomware and other threats before they can harm your files.
Powerful ransomware scanner
Shop and bank securely
Award-winning protection
Trusted by over 400 million users
Free ransomware scanner and ransomware protection
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Free ransomware scanner and ransomware protection
Avast has been stopping ransomware for years, and we’re only getting better with age. With Avast One, you will enjoy the world’s largest threat-detection network and machine-learning ransomware protection in a single, lightweight security tool. Plus, it’s 100% free.
The benefits of Avast One’s ransomware scanner and remover
Scan center
We’ll scan for and remove the malware that’s putting your PC at risk, no matter where it’s hiding.
Behavior Shield
Alerts you immediately if unusual app behavior is detected that may indicate a threat.
Malware alerts
If unusual app behavior is detected, you’ll see an immediate alert to block the threat.
File Shield
Blocks malicious files and programs from opening, and alerts you if new dangerous files are detected.
24/7 updates
We update our software constantly to protect against new and emerging ransomware strains.
Quarantine
Isolates potentially harmful files from the rest of your system to keep your computer safe.
Scan center
We’ll scan for and remove the malware that’s putting your PC at risk, no matter where it’s hiding.
Behavior Shield
Alerts you immediately if unusual app behavior is detected that may indicate a threat.
Malware alerts
If unusual app behavior is detected, you’ll see an immediate alert to block the threat.
File Shield
Blocks malicious files and programs from opening, and alerts you if new dangerous files are detected.
24/7 updates
We update our software constantly to protect against new and emerging ransomware strains.
Quarantine
Isolates potentially harmful files from the rest of your system to keep your computer safe.
Avast’s top-performing cybersecurity engine has been winning prestigious awards for years:
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PCMag: Editors’ Choice, 2023
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TechRadar: 5 stars, 2021
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AV-TEST: Top Product, AV Test Certified, 2022
A ransomware scanner trusted by over 400 million users
But don’t just take our word for it.
The UI for your software - amazing. Great work over the years. Can't say enough good things!
Ryan R.
Thank you, Avast, for the excellent work you do. I run your antivirus software on both my Mac OS X and my Windows machines. You have the best products on the market, period.
Eric S.
I’ve been using Avast for over a year and have found it one of the best free software protection devices on market.
Daryl C.
Macs and mobiles need ransomware protection, too
Ransomware can hold any device hostage, including Macs and mobile phones. Avast’s free antivirus software will help you protect against and remove ransomware from any device.
MAC
ANDROID
IPHONE/IPAD
Avast’s antivirus software for Mac strengthens Mac’s built-in security with specialized protection against malicious threats. Our leading security tool fights malware like ransomware and viruses while also countering phishing attacks, malicious websites, and Wi-Fi snoops.
Avast’s free Android security tool gives your phone the same ransomware-stopping power your PC enjoys. With one of the world’s largest threat-detection networks, our security app protects against mobile malware while helping you avoid phishing attacks and Wi-Fi threats.
Avast’s iOS security app bolsters Apple’s built-in security features by blocking ransomware and other malware and helping you browse the web safely.
FAQs
System requirements
We’re not demanding. All you need is a PC with Windows 11, 10, 8.1, 8 or 7*, 1 GB RAM
and 2 GB of hard disk space. And that’s it.
* Both the 32- and 64-bit versions, excluding Starter and RT editions.
Windows 10 compatible
