From the Counter Agent log file, the below error message is logged.
The agent has reached the maximum number (30) of IIS WMI provider errors and will now stop collection. To enable IIS monitoring, install the IIS Management Scripts and Tools component. If it is already installed, the failure is possibly due to the IIS WMI Provider running out of memory. Please restart the Windows Management Instrumentation service.
Restart Windows Management Instrumentation (WMI) Service.