Question Can I DCpromo a DC with Exchange server 2007 installed to member server or vice versa? Answer You cannot run DCpromo on a computer running Exchange 2007. After Exchange 2007 is installed, changing its role from a member server to a directory server, or vice versa, is not supported. Although installing Exchange 2007 on a directory server is supported, it is strongly discouraged. More Information Exchange 2007 System Requirements http://technet.microsoft.com/en-us/library/aa996719(EXCHG.80).aspx

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