15 Best Free Antivirus for Windows PC in 2017

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Antivirus, Antispyware, Antimalware, AntiRootkit, etc.

A lot of Windows users are resistant to admit they need any security software, but they are wrong. More than 80% PC operating system market share makes it the most targeted OS, like Android is being a target on handheld devices. It is very important to have at least one security software installed. If you cannot afford the premium price, worry not. Free solutions are available for your Windows computers.

I have handpicked 15 best Antivirus, Antispyware, Antimalware, AntiRootkit, etc. software for the protection of your Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista and Windows XP operating systems. Download links are given in front of every Antivirus in the table.

There are a couple of Antivirus which do not support older Windows OS like Windows 2000, Windows XP or Windows Vista. I have mentioned supported OS in front of every Antivirus, still, you verify from the respective vendor’s website.

AntivirusDownloadInfo
Microsoft Security Essentials / Windows Defender Security Center / Windows Defenderdownload button black computelogy-comWindows 10, 8.1, 8, 7
Avast Free Antivirusdownload button black computelogy-com Windows 10, 8.1, 8, 7, Vista, or XP SP3, 256 MB+ RAM and 1.5 GB of hard disk space
AVG Antivirus Freedownload button black computelogy-comWindows 10, 8, 7, Vista, XP SP3
Malwarebytes Antimalware Freedownload button black computelogy-com>Windows 10, 8, 7, Vista, XP SP3
>Download trial and use it as freeware for unlimited time
SuperAntispyware Free Editiondownload button black computelogy-comWindows 10, 8, 7, Vista,
Panda Antivirus Freedownload button black computelogy-comWindows 10, 8, 7
Avira Free Antivirusdownload button black computelogy-comWindows 10, 8, 7
OutPost Internet Security Suite FreeDiscontinuedDiscontinued
Comodo Antivirus Freedownload button black computelogy-comSupported OS: XP 32bit, Vista/Win7/Win8/Win8.1/Win10 32 bit & 64 bit / 152 MB RAM / 400 MB space
Spyware Blasterdownload button black computelogy-comWindows 2000, XP, Vista, 7, 8, 10. (32/64-bit)
Spybot - Search & Destroydownload button black computelogy-comWindows XP, Vista, 7, 8, 10. (32/64-bit)
Ad-Aware Free Antivirus+download button black computelogy-comWindows 7, 8, 10. (32/64-bit)
ClamWin Free Antivirusdownload button black computelogy-comWindows 10, 8, 7, Vista
ZoneAlarm Free Antivirusdownload button black computelogy-comWindows 10/8/7, Vista and XP
Qihoo 360 Securitydownload button black computelogy-comWindows 10/8/7
Bitdefender Antivirus Freedownload button black computelogy-comWindows 10/8/7