EventSentry ADMonitor uses the 'adminCount' attribute to determine whether a user is an administrator. However, since this attribute is not reset by Windows after a user is removed from an administrative ("protected") group, this can sometimes lead to inaccurate reports.
You can read more about the 'adminCount' attribute in KB article 412.
Follow the steps below to manually reset the 'adminCount' attribute:
Vid.1: Reseting adminCount attribute