Free Virus Scanner

Scan and remove viruses and malware from your device with our free virus scanner and AV scanner. Our virus scan supports all devices – Windows, Mac, Android and iOS.
Get advanced virus protection and antivirus with Malwarebytes Premium. 

Trusted by customers worldwide.

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Common signs of malware, viruses and
cyber threats on your device

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Lots of pop-ups

They might encourage you to visit unusual sites or download unfamiliar software.

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Frequent crashes

Your device can freeze or crash due to hard drive damage from a virus.

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Mass emails being sent in your name

Everyone’s worst nightmare: A cyberthief sends mass emails in your name.

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Your password suddenly changes

Unusual stuff happens, like a password change, that keep you from logging in.

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Slow computer

If your computer suddenly starts running slowly, it could be a virus.


Your homepage is different

Your homepage defaults to a different website or you can’t reset it

Our free online virus scanner stops a
virus infection in its tracks.

How to remove a virus or malware from your computer


Step 1 – Install online virus scan and AV scanner

Download and install Malwarebytes’ free virus scanner software. Click the “Scan” button and watch our virus detector quickly scan your device for malicious software and viruses

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Step 2 – Review detected cyber threats

After the scan is complete, Malwarebytes reports the detected malicious software, viruses and threats and asks if you want to remove them.

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Step 3 – Get rid of viruses and malware

Once you approve the virus removal, our online virus scanner and AV scanner tool will clean up malware, so your device is secure.

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Proactively protect your device from future viruses with Malwarebytes Premium.

Automatically scans and protects against viruses so you don’t have to.

Don’t take our word for it

“We use Malwarebytes on all of our company computers. Our experience is that Malwarebytes is effective and trouble free.”

‒ Robin G.
Fort Worth, TX

“Malwarebytes provides an extra, invaluable layer protection against malicious data, and that makes me and our systems feel safer!”

‒ Billy H.
Sarasota, FL

“Eliminating hundreds of potential malware and trackers every week for our entire organization.”

‒ Raymond P.
Southfield, MI


Is there a difference between viruses and malware?

Even in 2021, viruses are still a cybersecurity threat. A virus infection is harmful software triggered by performing common tasks such as opening an email attachment, launching an infected program, or viewing an ad on a malicious site. Viruses self-replicate by modifying or completely replacing files.

Viruses are a type of malware. Threat actors use malware often in an attempt to gain money illicitly. Although it likely won’t damage the physical hardware of your device or network equipment, different types of malware can be used to steal, encrypt, or delete your data, alter or hijack core computer functions, and spy on your activity.

The best way to protect against a virus infection and malware is to use a legitimate antivirus and anti-malware solution such as Malwarebytes Premium, which not only cleans up viruses but other threats too. It’s powered by artificial intelligence and machine learning and uses multiple types of security technology to keep your device safe.

How do I check for viruses?

To check for viruses, install our free virus scanner, click “Scan” and it will search your device for any viruses or other types of malware. If any viruses or other malware are found, you can then click to remove them. See our step-by-step instructions on how to scan and remove viruses above.

How do I remove a virus?

If you’re wondering how to remove viruses, you’ve come to the right place. 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.

How do I run an antivirus scan?

We make it easy for you to run an antivirus scan on your device. First, install our antivirus/anti-malware software, then click “Scan.” Once complete, you can remove any viruses and malware that were found. You can also see our step-by-step instructions on how to scan and remove viruses above.

Does Malwarebytes remove all malware?

Yes, the best virus scanner will be both a virus removal tool and an anti-malware program such as  Malwarebytes for Windows,  Malwarebytes for MacMalwarebytes for Android, or Malwarebytes for Chromebook. These cybersecurity solutions scan your computer for viruses, ransomware, and other forms of malware and remove them. You can clean viruses for free with our tool, as well as removing other types of malware.

Do Macs get viruses?

Macs are still vulnerable to viruses—even though it’s often believed they’re immune. The Mac operating system is more secure against the threat of viruses and malware than Windows, but malware can still sneak in.

The best course of action is to protect your device with antivirus/anti-malware software like Malwarebytes for Mac.

Do mobile devices get viruses?

Yes, mobile devices, such as Android devices, can be infected by viruses and the same kind of malware found on PCs. Unfortunately, most users don’t realize this and don’t take steps to protect themselves.

As a result, their online security is compromised, because they aren’t using a solution like Malwarebytes for Android. After performing an Android virus scan, our online virus removal tool will ensure your device is secure and virus-free.

Get started

Get Malwarebytes Premium for proactive protection against all kinds of malware.