Download Failed - Virus scan failed - Microsoft Community In order to get help with this issue, you need to go to registry editor by pressing windows+R together, Type "Regedit" and press enter to open the registry editor. Once you have found the Attachme­nt folder click on it to locate ScanWithAntivirus on the right side, right-click on ScanWithAntivirus, select modify and put the value as "0" (i.e ...