Free Online Virus Scanner and Malware Scanner | ESET (2024)

FAQs

How can I scan my computer for viruses online for free? ›

Free virus detection software from a reputable provider like Avast is the best way to perform a free virus scan, online as well as off. We'll automatically detect, block, and remove viruses and other malware from your devices.

The easiest way to remove malware from your Windows PC is to use a free virus removal tool like Avast One, which scans for and removes existing malware, as well as prevents future infections.

Avast Free Antivirus is completely free and offers all the security you need. How do I detect and remove viruses and other malware? Avast's free antivirus software detects and blocks all types of malware in real time to prevent them from infecting your computer.

Run a full-system scan

If you ever suspect your computer has a virus, use antivirus software to run a full-system scan of your device. It is best to set your antivirus program to do this automatically on a regular basis so you can detect any issues before they become emergencies.

Sophos Scan & Clean is a free, no-install, second-opinion virus removal scanner designed to rescue computers that have become infected with advanced zero-day malware, spyware, Trojans, rootkits, and other threats capable of evading real-time protection from up-to-date antivirus software.

Remove and protect all devices from viruses and malware with our free antivirus – Malwarebytes Free for Windows, Mac, Android and iOS. Explore advanced virus protection with Malwarebytes Premium.

AVG AntiVirus FREE is an award-winning anti-malware tool that scans and removes viruses, detects and blocks malware attacks, and fights other online threats, too. Protect your system with our world-class malware scanner and virus checker that's fast, lightweight, and 100% free.

Microsoft Defender Antivirus is free and is included in Windows, always on and always working to protect your PC against malware. Hackers and scammers sometimes use fake antimalware software to trick you into installing viruses or malware on your computer.

Protection from unknown threats: While free antivirus solutions can protect against known viruses, most cannot detect unknown threats, or malicious files whose signatures the system has not yet identified. Most premium antivirus tools protect against both known and unknown or yet-known threats.

Check your Windows PC with F‑Secure's safe and free online virus scanner. All you need to do is to install the online scanner and run it to detect malware on your device. The free virus scanner works only on computers running on the Windows operating system.

How to clean a computer of viruses for free? ›

If your device is showing symptoms of a virus, Malwarebytes' free virus scanner will scan your computer for viruses and remove them. It will perform a fast, free online scan for viruses and let you know if you've been infected. If you give your ok, it will then delete viruses and malware.

To protect your computer, you should always be running antivirus software, whether that's a pre-installed program, freeware, or a purchased subscription service. There are multiple freeware antivirus applications. There are also multiple subscription services that provide antivirus software and periodic updates.

You can also head to Settings > Update & Security > Windows Security > Open Windows Security on Windows 10, or Settings > Privacy and Security > Windows Security > Open Windows Security on Windows 11. To perform an anti-malware scan, click "Virus & threat protection." Click "Quick Scan" to scan your system for malware.