Trigger services within Windows 7

Windows 7 includes a new type of service called trigger.  A trigger-start service is a regular service that you can configure to run (or stop running) only when certain criteria and conditions that you define are met.  Some conditions would be:

Device arrival or departure

Joining or leaving a domain

Opening or closing a firewall port

Group policy change

To view trigger information, use the sc command with the parameter of qtriggerinfo.

Certain services will not have any triggers present.