The VMware performance monitor template fails to receive information from VMware vSphere Hypervisor 5.0 (ESXi) if testing is performed on Windows Server 2003.
Kaseya Network Monitor relies on Microsoft Windows HTTP Services (WinHTTP) for retrieving performance counters from VMware vSphere Hypervisor 5.0. When using WinHTTP on Windows Server 2003, the response from VMware cannot be interpreted by WinHTTP. Since the performance counters cannot be retrieved by KNM, it is not possible to configure the VMware performance monitor on a KNM installation on Windows Server 2003.
Install the latest build of KNM 4.1. This issue has been fixed from build 7332.
Kaseya Network Monitor 4.1 < build 7332