
Free virus scan for Windows PC
Online Scanner finds and removes viruses, malware and spyware on your Windows PC.
Keep all your devices safe with real-time online protection and frequent virus scanning. Learn more!
Click “Download free virus scan” to scan for malware and viruses
Download a free virus scan with our safe Online Scanner tool.
Run the .exe file to scan for viruses
Please uninstall other antivirus programs first — our scanner will keep you protected during the scan.
Online Scanner removes any found viruses
The free virus scanner is easy and safe to use. Running the scan doesn’t leave anything on your computer.
According to F‑Secure’s Scam Intelligence & Impacts Report 2025, 62% of US respondents have fallen victim to cyber crime during 2022–2025. Running regular virus scans is an important part of overall online protection.
Award-winning security for your online life
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Certified banking protection

Common signs of malware and viruses on your computer
Common signs that your device is infected with a virus or malware include:
Pop-up windows from unfamiliar sites
Slow computer and frequent crashes
Unexpected apps that you didn’t download
Password changes and unauthorized logins
If you notice any signs of malware or viruses, run a free F‑Secure scan to clean your device.

From one‑time virus scan to real‑time online protection
A one‑time online scan is a great first step to ensure there are no viruses on your Windows PC. Run the scan and remove dangerous malware that might already be lurking on your device. Keep your devices safe at all times with an award‑winning antivirus. Here’s how F‑Secure Internet Security antivirus protects you online:
Download files and apps without worry
Keep your money safe online
Avoid harmful websites
Stay safe against online scams
Get virus protection for all devices
Frequently asked questions about free virus scans
Use F‑Secure’s free virus scanner by clicking on the Download free virus scan
button, which downloads the Online Scanner tool. Once downloaded, run the .exe file to begin the detection and removal process.
You can check for a virus with F‑Secure’s free virus scanner. Common signs of viruses are slow performance, frequent crashes, unfamiliar pop-ups, or unexpected apps. If you notice these symptoms, you should run a free virus scan to confirm and clean the infection.
F‑Secure’s free virus scanner works by installing a scanner that detects malware on Windows PCs. While the free scanner tool is Windows-only, you can try F‑Secure Internet Security for free for 30 days, which includes a virus scanner along with other features to keep you safe online. F‑Secure Internet Security works on Mac, Windows, iOS, and Android devices.
F‑Secure’s Online Scanner is a safe, easy-to-use tool that finds malware, viruses, and spyware on Windows PCs. It provides a high-quality, one-time cleanup without leaving any viruses behind.
First, uninstall any other antivirus programs to ensure F‑Secure Online Scanner works correctly. Then download and run the .exe file, which will scan your Windows PC for threats and keep you protected throughout the process.
You can remove a virus by running a one-time online scan that automatically detects and removes dangerous malware lurking on your device. For future and more holistic protection, we recommend using a comprehensive security solution such as F‑Secure Internet Security.
Free tools can remove existing infections but often lack the real-time monitoring and frequent updates needed to block new threats. For better safety, comprehensive online protection software like F‑Secure Total provides real-time malware, scam and identity theft protection, as well as a VPN for full privacy.
F‑Secure Online Scanner supports Windows 10 (version 21H2 or newer) on x64 systems, and Windows 11 (version 24H2 or newer) on ARM64 systems.