Unable to install SCOM 2016 Agent. Getting the following error: “MainEngineThread is returning 1603” We will get the following error in the MOMAgentinstall.log Property(S): OpInsightsUnknownErrorDlg_Text = Unknown error was encountered during setup. Please check log file: (%temp%\MonitoringAgent.log). Property(S): OpInsightsServerKeyValidationErrorDlg_Text = The workspace key could not be validated.  The error returned from the service was: Property(S):... Continue Reading →