Microsoft offer a portable (small size) antivirus microsoft safety scanner with latest virus definations which you can user to scan any computer affetcted with virus . This programm does not require installation. and your PC is not required to be connected to internet for updating as it comes with latest defination.

It can run on any Window OS(XP,Vista,Win 7). and absolutely free. But only catch is downloaded file can only run for 10 days. To run after that you can redownload it with latest definations .

Liked the article then share it with friends.