When you install the Window Server 2012, you assume that the installation is done and click on the dashboard, if you receive the error as below, it mean that the setup is not complete yet.
Microsoft have allow you to access to the Window server 2012 even you not done with the setup? Well I think it was a bug where you need to trigger the installation by some step and not by one button. Weird……
How was the step?
(2)search for the file setupmon.exe in C:\Program Files\Windows Server\Bin
(3)run it as administrator
(4)the installation will continue again
(5) It will prompt you with the message what is the cause the installation is not completed just now. For my case, the ram and disk space is not sufficient.
(6) Follow the step and configure it. And well done , you finally finish setup Windows server 2012.
PS: If your server only have 4GB of ram, forget about upgrade to Windows server 2012.