1. Remove it if you are trying to upgrade an existing SnapDrive installation. Install the new package.
2. Clean the temp and SnapDrive installation directory.
2. If it is a Virtual machine.Remove the stale registry entries from "Regedit". Search for "VirtualizationAPI" and remove all occurences of this string from registry. Uninstall the "VirtualizationAPi" instances from "C:\WINDOWS\assembly" directory.