![]() ![]() Install the AGPM Server component on a Windows Server-based computer that has the GUI installed. Several GPMC Interfaces will be installed on the system only when GPMC is installed.īecause Windows Server Core doesn't have the GPMC Interfaces installed, applications that use this interface will fail. These issues occur because the AGPM Server component and the GPRESULT /h command require the Group Policy Management Console (GPMC) to be installed on the Local System. ![]() On a Windows Server Core computer, when an administrator runs the gpresult /h command to retrieve the GPO settings for this computer or user, GPRESULT returns the following error message: Unable to cast object of type 'System.DBNull' to type '.GPMBackup' GPRESULT Scenario The overall error was: The data is invalid. In this situation, the following error occurs whenever an administrator tries to take control of an unmanaged Group Policy Object (GPO): AGPM is installed on a client computer that is running Windows Server or a Windows client operating system that has Remote Server Administration Tools installed. This article provides a solution to an error that occurs where AGPM and GPRESULT do not work on a Windows Server Core installation.Īpplies to: Windows Server 2012 R2 Original KB number: 2987708 Symptoms Microsoft Advanced Group Policy Management (AGPM) ScenarioĪssume that AGPM Server is installed on a computer that is running Windows Server Core (Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2).
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