Computer ({0}) cannot be managed because it is running an operating system which is not supported by Share and Storage Management. ...

Computer ({0}) cannot be managed because it is running an operating system which is not supported by Share and Storage Management. Share and Storage Management can be used to manage Windows Server 2008 or later.  To manage computers running an earlier version of the operating system, use the ‘Shared Folders' and ‘Disk Management' snap-ins.