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Free Trojan Scanner and Removal Tool

Avast Free Antivirus scans and cleans Trojans hiding on your device — and prevents future attacks from Trojans and other types of malware. Plus it’s 100% free and easy to use.

People love Avast Free Antivirus

6207 people rated us 4.7/5

Avast’s best Trojan scanner and cleaner — completely free

Hidden Trojans can compromise your data and slow down your PC (and other devices, too). Trojans are disguised as benign files, but start to wreak havoc once they sneak into your system. Luckily, Avast has the fastest and most accurate Trojan scanner on the market. There’s simply no better choice to remove Trojans ASAP.

Avast Free Antivirus lets you:

We’ve packed the world’s largest threat-detection network and machine-learning malware protection into a single, lightweight malware scan and removal tool that won’t slow down your PC. And did we mention, it’s 100% free?

Don’t take our word for it

We know we’re not an unbiased source, but fortunately the pros are. And they all agree that Avast is worthy of its many accolades, awards, and 5-star reviews.


A Trojan scanner trusted by over 400 million users

But don’t just take our word for it.

Keep your Mac and mobile devices safe

Every device needs protection from Trojans, not just Windows PCs. So we’ll help you keep your Mac and mobiles Trojan-free, too.

Avast Security for Mac offers quick, powerful scans against Trojans. And you can trust it to keep your Mac safe from other threats, too — all for free.

Avast Mobile Security for Android protects all your Android phones and tablets. Not only does it eliminate Trojans and other threats, but it also safeguards your photos, optimizes your battery, and helps you find your device if it gets lost.

Download our free Trojan scanner and remover

Looking for the best way to protect yourself against Trojans? You found it. And at the nicest possible price — free.


How can I get rid of a Trojan?

There’s no easier way than downloading a Trojan scanner and removal tool, like Avast Free Antivirus. But if you want to learn how to identify and remove a Trojan (or any other kind of virus) from a specific type of device, we’ve got you covered:

Can a Mac or mobile device get Trojans, too?

If you ever connect your device to the internet, then yes, it’s at risk. Mac attacks have been growing over the past few years. And while Android devices are more at-risk than iPhones/iPads, iOS devices are still vulnerable to other security threats.

Is Windows Defender enough to protect my PC?

Windows Defender lacks many essential features that other free antiviruses offer, and it sometimes even blocks clean files that you can trust. For best results, use a free Trojan scanner and remover like Avast Free Antivirus to stay safe.

What are Trojans and how do they spread?

A Trojan is a type of malware that gets into your computer much like its ancient Greek namesake. It disguises itself as something friendly or desirable, then sneaks into your device when you finish your download. Trojans can be attached to emails, posted on file-sharing sites, or found in illicit storefronts.

System requirements

We’re not demanding. All you need is a PC with Windows 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

Get free threat protection for your iPhone with Avast Mobile Security


Protect your PC against Trojans and other malware with Avast Free Antivirus


Protect your Mac against Trojans and other malware with Avast Security


Protect your Android against Trojans with Avast Mobile Security