Health Report covers the health of several key functionalities for Windows Server 2012 Essentials, it is designed to assist the administrator to easily monitor the server’s overall status, with a manually or automatically generated report.
Note if you have installed pre-RTM version, you should uninstall the previous version first, before you can install the RTM version.
To uninstall the pre-RTM Add-in:
Open Dashboard, select APPLICATIONS from the navigation bar.
From Add-ins page, select Health Report from the list of installed add-ins.
From the Health Report Tasks, select Remove the add-in.