In our small office, we have several Windows desktops installed as peers in a workgroup. We want to install Microsoft Server 2012 Essentials (bare-bones server O/S) on a new machine in this network as "just another server" to use for file shares and a couple of client/server applications. It's our first server - everything else is a desktop PC. It seems to want desperately to be a domain controller, and once installed that way you can't "downgrade" it to just a workgroup member. If it is installed as a domain controller, then all the other machines can't even see it unless they are brought into the domain - a disruptive process and a gross overkill for what we need. Is there a way to make this machine be just another workgroup member? I can blow it away and install again, if I know what to do to make it stop its obsession with being a domain controller.