Windows Defender is currently flagging all downloads of LiveUpdate as containing Varpes.J!plock. From the support site link http://download.msi.com/uti_exe/LiveUpdate.zip to external download links such as http://www.softpedia.com/get/System/System-Miscellaneous/MSI-Live-Update.shtml#download . The fact that different source links with different file sizes return the same virus diagnosis makes me think it's a false positive, but I'm not particularly willing to take the chance and exclude it without further information. It seems worth looking into. Wouldn't be the first company to have download links altered.