Windows service

In Windows NT operating systems, a Windows service is a computer program that operates in the background.[1] It is similar in concept to a Unix daemon.[1] A Windows service must conform to the interface rules and protocols of the Service Control Manager, the component responsible for managing Windows services. It is the Services and Controller app, services.exe, that launches all the services and manages their actions, such as start, end, etc.[2]

Windows services can be configured to start when the operating system is started and run in the background as long as Windows is running. Alternatively, they can be started manually or by an event. Windows NT operating systems include numerous services which run in context of three user accounts: System, Network Service and Local Service. These Windows components are often associated with Host Process for Windows Services. Because Windows services operate in the context of their own dedicated user accounts, they can operate when a user is not logged on.

Prior to Windows Vista, services installed as an "interactive service" could interact with Windows desktop and show a graphical user interface. In Windows Vista, however, interactive services are deprecated and may not operate properly, as a result of Windows Service hardening.[3][4]

  1. ^ a b Cite error: The named reference Services snap-in was invoked but never defined (see the help page).
  2. ^ "Services". Microsoft Developer Network. Microsoft. Retrieved 29 March 2013.
  3. ^ "New Elevation PowerToys for Windows Vista". TechNet Magazine. Microsoft. June 2008. Retrieved 21 June 2013. The service CmdAsSystem is configured as interactive whose support is being deprecated. The service may not function properly. The problem is that this script tries to create and start an interactive service. Interactive services will not function correctly due to Session 0 Isolation in Windows Vista.
  4. ^ "Services in Windows". MSDN. Microsoft. 18 October 2010. Retrieved 21 June 2013.

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