Best offline antivirus to secure your Windows PC [2020 Guide]

Radu Tyrsina
by Radu Tyrsina
Founder & Editor-in-Chief
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Offline antivirus

Today’s malware is some of the most significant threats to a home-based or a business computer. If your system gets infected, it will be less likely that you’ll be able to install and run anything on your system.

To overcome such a situation, it’s recommended that you have an offline/portable virus scanner to scan your system. A PC that became severely infected may also not have access to the Internet anymore, and that’s why a portable virus scanner plays such a crucial role in your computer.

We’ve listed five of the best offline antivirus programs that are portable tools, and this means that you’ll be able to easily run them from a USB stick for instance. Check out all their features and see which one seems to fit your security needs best.

Offline antivirus tools for no headaches in 2019


BullGuard Antivirus (recommended)

BullGuard Antivirus is a useful and straightforward product that comes with real-time virus protection, malicious URL blocking and it also includes a customizable spam filter.

Check out the most impressive features that are included in this software:

  • Starting BullGuard setup process takes just a moment, and the starter files are tiny.
  • The program will be up and scanning your system as fast as possible.
  • You will have to create an account before BullGuard starts working.
  • All the program’s executables are digitally signed, and they’re protected from malware attacks.
  • The interface is user-friendly, and even beginners will get the hang of this software really quickly.
  • You will be able to launch a Quick Scan with just a single click.
  • You can choose a Full or Custom Scan from the menu, and the process will be speedy.
  • It comes with a system report, and you can scroll back through previous scans, check results, see what was scanned and view basic system data.
  • The spam filter is useful, and it integrates with Outlook, Thunderbird, Windows Mail and Windows Live Mail.

BullGuard Antivirus is lightweight, looks great and it’s really speedy. It offers a valuable extra feature with is accurate spam filter.

Why Bullguard?
bullguard security logo
  • Best malware protection
  • Simple and intuitive UI
  • Browsing security

Bitdefender Antivirus

Bitdefender Antivirus Free Edition

Bitdefender Antivirus is able to provide superior protection from viruses and other threats compared to the built-in antivirus tool from Windows 10, Windows Defender. The tool will keep your computer secured against malware, and it will offer enhanced protection against phishing attacks, and suspicious activity.

Check out the best features that are included in this software:

  • This antivirus tool was designed for anyone who wants to keep the computer secure without having to worry about complicated details.
  • After you install it, you will probably never have to look at it again.
  • The program will take care of everything in the background, and there won’t be any complex configuration to worry about.
  • Bitdefender Antivirus has an excellent track record of picking up both known and unknown threats.
  • You also have the ability to decide whether you want to perform a full system scan or if you prefer checking individual files manually.
  • To check the files, you just have to drop them onto the program window.
  • A full scan is also a straightforward process.

The interface is accessible and clean with a new streamlined dashboard and specific protection against ransomware.

World's best antivirus
bitdefender 2019 product image
  • Great price plan
  • VPN included
  • Best Windows compatibility
  • Awesome customer support

Emsisoft Emergency Kit

This a collection of portable software that comes with a sturdy Malware scanner, HijackFree, and BlitzBlank in the Pro version. The free version of the software includes a powerful malware scanner that will eliminate deep threats. You can run the program via a USB stick.

Check out more of its essential features below:

  • The software is ideal for rescuing your computer from infections.
  • It supports both the command line and GUI.
  • You can download it for free, and you can also purchase a pre-compiled USB stick for commercial use.
  • You have to download and run the executables to extract the Emergency Kit.
  • If you run the program on a system without an Internet connection, you have to select No to bypass the online definition update.
  • The website updates the Emergency Kit executable once a day at least.
  • The Quick Scan is just a light scan.
  • The Custom Scan will scan the entire system.

A useful option is the Whitelist that will exclude files, folders, and processes from the scan if you choose this.

–  Download now the Emergency Kit from Emsisoft


Avira PC Cleaner


Avira PC Cleaner used to be the most popular free antivirus until the company partnered with and its nasty toolbar. On the other hand, Avira’s detection rates are excellent and running an offline scan will turn out useful for protecting your computer.

Check out the most impressive features included in Avira PC Cleaner:

  • First, you need to semi install Avira PC Cleaner and run it on an Internet-enabled computer to download the 100MB of definitions.
  • After you did that, you have to go to the Windows Temp folder and copy the folder called Cleaner to another folder or a flash drive.
  • You have to run the Remove Avira PC Cleaner desktop shortcut, and this will remove everything.
  • There is also an option available in the primary interface to copy Avira PC Cleaner straight to a USB flash drive.
  • When you run the PC Cleaner all you have to do is use the avwebloader.exe and select Yes; this way you will use the existing definitions.

Avira PC Cleaner comes with two modes, a normal one and a full scan which will take longer than the normal. Get Avira PC Cleaner to start taking care of your computer in a proper way.


eScanAV AntiVirus Toolkit


eScanAV AntiVirus Toolkit is less well known than all of the software that we have mentioned above. On the other hand, its detection results place this program in line or even ahead of some major household names. eScanAV AntiVirus Toolkit also provides an Antivirus Toolkit that is a dedicated portable virus scanner, and this means that it will work even when you’re not connected to the Internet. Check out the best features that are included in the software:

  • The software is straightforward to use, and all your options will be placed in just one window.
  • You will be able to select which areas and drives you want to scan.
  • You can choose if you want to scan or also clean the drives.
  • You can also check archives.

First, it’s recommended that you update the virus definitions that may be out of date and for this you’ll need an Internet-enabled computer. You have to unpack mwav.exe and run to launch the program and click Update to get the latest definitions. You can take the mwav folder to an offline computer after performing the update. You can get eScanAV AntiVirus Toolkit and start securing your system.

These are our picks for the best five offline antivirus software. Each of them comes with its unique set of useful features, but all of these tools are guaranteed to keep your system safe and clean even while you are offline. Check them all out and after analyzing their features get the best option for your computer’s safety.