Get high-quality, hassle-free antivirus protection for your home PC now. Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software.
Microsoft Security Essentials is simple to install, easy to use, and always kept up to date so you can be assured your PC is protected by the latest technology. It’s easy to tell if your PC is secure — when you’re green, you’re good. It’s that simple.
Microsoft Security Essentials runs quietly and efficiently in the background so that you are free to use your Windows-based PC the way you want—without interruptions or long computer wait times.

This is a just released Final version.
If you already have beta version installed then you may upgrade without uninstalling, just run the setup file and your beta version will be up ... Read more »

Trojan Remover aids in the removal of Malware - Trojan Horses, Worms, Adware, Spyware - when standard anti-virus software either fails to detect them or fails to effectively eliminate them. Standard antivirus programs are good at detecting this Malware, but not always so good at effectively removing it.
Trojan Remover is designed specifically to disable/remove Malware without the user having to manually edit system files or the Registry. The program also removes the additional system modifications some Malware carries out which are ignored by standard antivirus and trojan scanners. Trojan Remover scans ALL the files loaded at boot time for Adware, Spyware, Remote Access Trojans, Internet Worms and other malware. Trojan Remover also checks to see if Windows loads Services which are hidden by Rootkit techniques and warns you if it finds any. For each identified Trojan ... Read more »