For a variety of reasons you might want to move the role of operations master to a different DC. To do so, open the Active Directory Domains And Trusts Console and click the Active Directory Domains And Trusts branch. Choose Action | Change Active Directory Domain Controller. Locate and select the DC that will become the operations master and click OK. Choose Action | Operations Master or right-click the branch and choose Operations Master from the context menu. In the Operations Master dialog box, click Change.