Services
This list is not all-inclusive (see also: Windows Services).
| Display name | Service key name | Description | Introduced |
|---|---|---|---|
| Active Directory Service | NTDS | Network Authentication Management | Windows 2000 Server |
| Alerter service | Alerter | Sends administrative alerts over the network to client computers, administrators and users. | Windows NT |
| Application Layer Gateway service |
ALG | Provides support for plugins that allow network protocols to pass through Windows Firewall and work behind Internet Connection Sharing. | Windows 2000 |
| Application Management | AppMgmt | Processes requests to enumerate, install, and remove applications that are installed on the computer or deployed through an organization’s network. | Windows 2000 |
| Background Intelligent Transfer Service |
BITS | Transfers files between machines using idle network bandwidth. Used by Windows Update, Windows Server Update Services, and Systems Management Server to deliver software updates to clients, as well as by Windows Messenger. | Windows XP |
| Computer Browser | Browser | Crawls neighboring computers on the network and locates shared resources. One of the computers acts as the Master Browser and supplies this information to other computers designated as browsers. | Windows for Workgroups |
| Distributed Link Tracking | TrkWks, TrkSrv | Used to track links to files on NTFS volumes. Windows uses these services to find linked files if they are renamed or moved (locally or to another machine). | Windows 2000 |
| Distributed Transaction Coordinator |
MSDTC | Allows transactional components to be configured through COM+ by coordinating transactions that are distributed across multiple computers and/or resource managers, such as databases, message queues, file systems, and other transaction–based resource managers. | Windows 2000 and later NT-based |
| DNS Client and Server | DNSCache/DNS | The client service resolves and caches DNS names. The DNS server performs DNS name resolution. | Client in Windows 2000 and later NT-based, Server in Windows NT 4.0 and later NT-based |
| Event Log | EventLog | Stores and retrieves events that can be viewed in the event viewer. Part of services.exe. | Windows NT |
| Extensible Authentication Protocol | EAPHost | Provides EAP authentication to connecting clients | Windows 2000 |
| Indexing Service | CISVC | Indexes contents and properties of files on local and remote computers; provides rapid access to files through flexible querying language. | Windows 2000 and later NT-based |
| Network Location Awareness | NLA | Manages network configurations and information, and notifies applications of changes. | Windows XP |
| Network Store Interface Service | NSIS | Collects routing information of active network interfaces, shares this with other services and notifies applications of changes. | Windows XP |
| NTLM Security Support Provider | NTLMSSP | Uses the NTLM MS-CHAP protocol to encapsulate and negotiate options in order to provide signed and sealed communication. Deprecated now in favor of Kerberos authentication. | Windows NT |
| PNRP | PNRPSvc | Resolves domain names using PNRP. | Windows XP |
| Plug and Play | PlugPlay | Enables autodetection and configuration of hardware. | Windows 2000 |
| Print Spooler | Spooler | Manages printer devices and moves files into memory for printing. | Windows 95, Windows NT |
| Routing and Remote Access Service | RRAS | API and server software that makes it possible to create applications to administer the routing and remote access service capabilities of the operating system, to function as a network router | Windows 2000 |
| Secondary Logon (Run As...) | SecLogon | Allows users to run programs with a different account than the one they logged in with. Allows non-administrative accounts to perform administrative tasks. | |
| Security Account Manager | SamSs | Manages user account security information. | Windows NT family |
| System Event Notification | SENS | Monitors system events, such as network, power, logon, logoff, terminal services session connection and disconnection, and delivers these to applications and other system components. | Windows 2000 |
| Task Scheduler | Schedule | Lets users setup and schedule automated tasks. | Microsoft Plus! for Windows 95 |
| TCP/IP NetBIOS Helper | LmHosts | Enables support for NetBIOS over TCP/IP (NetBT) service and NetBIOS name resolution. | Windows NT family |
| Windows Audio | AudioSrv | Manages audio devices for Windows-based programs. Controls all audio functions. | Windows XP |
| Windows Error Reporting | WERSvc | Generates error logs and reports errors. On Windows Vista and later, it notifies of solutions. | Windows XP |
| Windows Image Acquisition (WIA) | STISvc | Handles scanner and camera inputs. | Windows Me |
| Windows Time | W32Time | Synchronizes the system time with external time servers. From Windows Server 2003 forward, full and compliant NTP support is provided. | Windows 2000 |
| Windows Update | WUAUServ | Provides updates for the operating system and its installed components. | Windows XP |
| Wireless Zero Configuration | WZCSvc (XP), WLANSvc | Configures and manages 802.11 wireless adapters. | Windows XP, Server 2003 only |
| Windows Messenger service | Messenger | Allows users to send pop-up messages to other computers over the network. | Windows NT family |
| MSRPC | RpcSs | Provides Remote Procedure Call (RPC) technique via remotely accessible Named Pipes. | Windows NT family |
| Volume Shadow Copy Service | VSS | Create multiple versions of files that change. Gained ability to store persistent snapshots in Windows Server 2003. | Windows XP |
| WebClient | Enables Windows-based programs to create and interact with Internet-based files. | Windows XP | |
| Windows Firewall/ Internet Connection Sharing |
SharedAccess | Internet Connection Sharing (Firewall) | Windows 2000 |
Read more about this topic: List Of Microsoft Windows Components
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