Although this chapter focusses on installing Exchange Server 2013, we thought it would be of interest explaining how to uninstall a Server or Server Role.
In order to remove Exchange from a server, you need to be a member of the Organization Management role group and either have been delegated permissions on the server or have local Administrator rights.
Somewhere along your Exchange administration timeline, you will probably need to uninstall a server role from an existing multi-role machine. One might think this isn't a difficult task—and to be honest it shouldn't be—but uninstalling a server role from an Exchange Server 2013 is actually not possible. The only option is to completely uninstall Exchange and then only to reinstall the role you want to keep.
Similar to the installation process, uninstalling is possible through the setup wizard or by using the command line. Both examples are explained in this section...