How can I download an anti virus software for free?

You can choose from any of the three that are free:

Microsoft Security Essentials

http://www.microsoft.com/en-us/security_essentials...

Avast

http://www.avast.com/free-antivirus-download

Avira

http://www.avira.com/en/avira-free-antivirus

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2 superb unfastened anti virus softwares are Avast and Avira . any a kind of two will take care of you online . you additionally should get carry of and use malwarebytes anti malware and test with it as quickly as each week to make confident your anti virus utility didnt omit something .

Here is a short list of brands with free Security Software: Avast!, AVG, Avira, ClamWin, KingSoft, PC Tools. Found this list who has them all: http://www.freealternativesoftware.com/?sid=59:Fre...

Uh Use Avast or AVG. IF you choose AVG don't get the trial because you won't be able to download the free one anymore.

AVG has a free version. Its fairky basic, but never let me down.

they hide the link to the free version, so youll have to snoop around the site a little to get to it.

i also use then for my android phone.

Avast -> http://download.cnet.com/Avast-Free-Antivirus/3000...

Register for Free -> http://www.avast.com/registration-free-antivirus.p...

Avira, avast, AVG, take your pick. They're fairly basic, but it should be enough for normal usage. I'd personally recommend AVG, it's slightly more user-friendly than the other two. (And the database is updated quicker)

just make sure you uninstall you're current anti virus before downloading a new one.

avast.com

free and renewable for free.