3.2.7.3 SoH Change Notifications

WSHA registers with the Windows Services Manager to receive any change in the state of the Windows Security Center service and the Windows Updates service.

WSHA registers with Windows Security Center (WSC) to receive any change in the state of the firewall, antivirus, antispyware, and automatic updates.

WSHA registers with the Windows Updates service to receive any change in the state of required software updates.

After WSHA receives an indication of change in state of one of the above, it signals the Network Access Protection (NAP) client by calling the INapSystemHealthAgentBinding::NotifySoHChange public method (described in [MSDN-NAPAPI]) to initiate a new health assessment cycle.