Review these notes:

• It is good practice to check the server frequently to ensure that it has the latest Windows updates installed. WMI (Windows Management Instrumentation) updates are especially important because the Agent uses WMI to collect Server Visibility metrics.
• The monitored server should have at least four cores or multiple CPUs. WMI processes can be highly resource-intensive, especially on Windows Server 2012.
• If you do not have a Server Visibility license, or to collect Basic metrics only, configure the Agent to use the JavaHardwareMonitor extension. Server Visibility should not be enabled on the Agent.
• The Windows Machine Agent uses these extensions by default:
  • JavaHardwareMonitor (for Basic metrics)
  • ServerMonitoring (for Server Visibility metrics)
• The HardwareMonitor extension is not recommended on Windows.
• To enable Server Visibility on a Windows server with a .NET APM Agent installed, you must enable .NET Compatibility Mode on both the Controller and the Machine Agent.