I’ve written about Microsoft’s Security Essentials before but I recently noticed that they have began distributing it via Windows Update. So if you are on a PC without any virus protection, Microsoft Security Essentials Free AntiVirus will be one of the optional software installs! Very Neat. Normally, the machines I work on have some sort of virus protection so I am not sure when this change happened on Update but I think it is great to help the not so techy users out there protect their computers at the right price. Of course, if you DO HAVE virus protection on your box, you will not see this option. Kudos to Microsoft!
Once MS Security Essentials is installed, all virus updates and program updates will flow down from Windows Update.