Microsoft Security Essentials x86/x64 v4.5.216 (ALL languages in ONE) About: This installer should work for ALL languages & architectures. Run this installer with /? or /h for detailed silent install instructions (the default is not silent and no updates are installed) Supported OS(s): Windows XP Service Pack 3 (SP3)*; Windows Vista (Service Pack 1, or Service Pack 2)*; Windows 7* Download: http://adf.ly/1713566/mssecesaio MD5: 2571d79679ae8b8f72784633e01eb65a Size: 14.4 MB