After installing Active Administrator, the Active Directory Health module status window indicates that one or all of the domain controllers are not monitored, when clicking on the 'Agents' tab shows a working agent installed
Errors encountered might include:
"This domain controller is not being monitored"
"All pipe instances are busy"
"An error occurred while attempting to load the forest summary. Object reference not set to an instance of an object"
"String not defined. One or more errors occurred"
"An error occurred while attempting to load the site from the server. One or more errors occurred"