When installing server 2016, you should choose the right version of windows to install because, currently
Microsoft does not provide the option to add and remove the Server GUI package to the Windows Server 2016 Server and vice versa.
Be ready to choose between the Windows Server Standard Version or Windows Standard (Desktop Experience) or Windows Server DataCenter Version or Windows Server DataCenter (Desktop Experience)
NOTE: When Windows installed you canít go back and for example change the edition. If so, do the clean installation again.