OS X Server, Server 5, El Capitan Server can have problems with Open Directory. Sometimes, you just need to reset your directory service. You can demote and restore the server if needed. But buyer beware, you may end up screwing things up while the directory server is being demoted and you’re restoring a backup. Or if you haven’t built out the directory server, you may end up just demoting the server and starting over. In this article, we’ll look at demoting the server. To get started demoting the Open Directory master, first open the Server app and then click on Open Directory. From the Open Directory screen, click on the minus button…