With IPHost Network Monitor you can run WMI State Server Sessions Active monitoring of various devices in your network.
To create a WMI monitor for State Server Sessions Active, provide host name (it must be a Windows host) and specify custom WQL query:
The current number of sessions currently active.
ASP.NET State Service
IPHost Network Monitor is an advanced and easy tool for monitoring LAN and WAN networks, network servers, workstations and TCP/IP devices. Use IPHost Network Monitor to monitor your servers, domains, computers and devices.