I'm running Vista 64 bit and have been successfully using Microsoft Seccurity Essentials for a long time. Lately, I began receiving a message saying, "MSE" will no longer support your O/S. When I try to get update definitions they will not download and Scanning doesn't complete. A suggestion is to clicking on the link below to get info. as to what to do.  When I click on that link, it speaks about Win. XP with no mention of Vista. I've never ran Win. XP on this Laptop. HELP??