Microsoft Security Essentials (MSE), Microsoft’s free Anti-Virus/Anti-Spyware software for Windows operating system scores good in malware removal tests conducted by AV-Comparitives on the malware removal/cleaning capabilities.

In the most recent report on malware removal test, Microsoft Security Essentials achieved 98% detection rate for 545k malware samples including viruses, bots, trojan horses, backdoors and Internet worms, also achieving 90.95% detection rate for 14,222 adware/spyware samples it was tested against. It is the only free antivirus rated Advanced+, alongside with eScan, Symantec, Bitdefender, Kaspersky, and F-Secure. Microsoft Security Essentials scored good in removal of malware and removal of leftovers, beat out other free competitors like AVG, Avira, and Avast.

Download Microsoft Security Essentials

It works on Windows XP, Windows Vista, and Windows 7.