
ClamWin Free Antivirus is an open source project, meaning to say, it is free. What makes it unique is its portability, by copying certain files to its directory, you now have a portable USB antivirus. When plugged into the computer USB drive with internet access, it will update the database.
Unlike Norton, MacAfee, Kaspersky or all the other big company. ClamWin doesn’t have a real time scanner, this can be overcome by scanning the file prior to execution. It doesn’t have fancy graphics like Norton, Kaspersky, Biddefender and more, however, ClamWin free antivirus comes with an easy installer and simple user interface, it features:
- High detection rates for viruses and spyware;
- Automatic downloads of regularly updated Virus Database.
- Standalone virus scanner and right-click menu integration to Microsoft Windows Explorer
- Addon to Microsoft Outlook to remove virus-infected attachments automatically.


How to create your own portable ClamWin on a USB or removable drive? Follow the step by step tutorial.
- Install ClamWin AntiVirus onto your computer
- Copy all the files from “c:\program files\clamwin” to a “clamwin” folder on you USB thumbdrive. Remember, unins000.exe and unins000.dat files are not needed
- Copy “c:\program files\clamwin\bin\Microsoft.VC80.CRT”
- Copy “c:\program files\clamwin\bin\msvcm80.dll”
- Copy “c:\program files\clamwin\bin\msvcr80.dll”
- To the “clamwin\bin” folder on your usb flash drive.
- Copy this ClamWin.conf (right-click to Save) file to “clamwin\bin” folder on the removable drive (note Standalone=1 setting)
- Create the following folders on the removable drive as shown in the image below:
- Copy the CalmWin antivirus database files (main.cvd and daily.cvd) from your database directory from your computer (“C:\Documents and Settings\All Users\.clamwin\db”) to the “clamwin\db” folder on your USB thumbdrive.
- You’re done! Double click clamwin.exe to run the antivirus
- - “clamwin\log”
- “clamwin\db”
- “clamwin\quarantine”

Next Part: Free Portable USB AntiVirus Scanner Software For Flash Drive
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{ 1 comment… read it below or add one }
nice information.. but if anyone don’t want to install clamwin to create the portable AV, the portable version can be downloaded from
download the installer, execute it, it will ask for the place to extract files, specify your removable drive. you are done. download updates, before scanning.