MSBTS_HostInstanceSetting.IsDisabled Property (WMI)
Enables or disables a host instance.
The IsDisabled property can be changed when the host instance is in the stopped or started state. However, if a host instance is disabled while it is running, then the change will not take effect until the host instance is stopped. Thus a running host instance will continue to run even if it is disabled. But once it is stopped, you cannot start it until the IsDisabled property is set to FALSE again.