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The difference between a service and a service in Windows. Which Windows services can be disabled to speed up the system. The emergence of trigger-based services

Last updated: 10/31/2015

One of the most important components of the Windows OS is services. In fact, these are separate applications that do not have a graphical interface and that perform various tasks in the background. Services can be started when the operating system starts, or at any other time the user is working. A common example of services are various web servers that listen in the background to a specific port for connections, and if there are connections, they interact with them. It can also be various auxiliary update services for other installed programs that contact the server to find out if there is a new version of the application. In general, we can open the services panel and see for ourselves all installed and running services:

Let's look at how to create your own services in C#. As the task to be implemented, we will choose to monitor changes in a specific folder in the file system. Now let's create a service to execute it.

First, let's create a new project, which will be of type Windows Service. Let's call the project FileWatcherService:

Visual Studio then generates a project that has everything you need. While we don't necessarily need to choose this type of project, we could create a class library project and then define all the necessary classes in it.

So the new project looks like this:

There is also a file Program.cs and there is the actual service node Service1.cs.

The service represents a normal application, but it does not start on its own. All calls and access to it go through the service control manager (Service Control Manager or SCM). When a service starts automatically at system startup or manually, SCM calls the Main method in the Program class:

Static class Program ( static void Main() ( ServiceBase ServicesToRun; ServicesToRun = new ServiceBase ( new Service1() ); ServiceBase.Run(ServicesToRun); ) )

The Main method is defined by default to run multiple services at once, which are defined in the ServicesToRun array. However, by default the project contains only one service, Service1. The launch itself is carried out using the Run method: ServiceBase.Run(ServicesToRun) .

The service being started is represented by the Service1.cs node. However, this is not actually a simple code file. If we open this node, we will see the service designer file Service1.Designer.cs and the Service1 class.

The Service1 class actually represents the service. By default it has the following code:

Using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Diagnostics; using System.Linq; using System.ServiceProcess; using System.Text; using System.Threading.Tasks; namespace FileWatcherService ( public partial class Service1: ServiceBase ( public Service1() ( InitializeComponent(); ) protected override void OnStart(string args) ( ) protected override void OnStop() ( ) ) )

The service class must inherit from the ServiceBase base class. This class defines a number of methods, the most important of which are the OnStart() method, which starts the actions performed by the service, and the OnStop() method, which stops the service.

After SCM calls the Main method and registers the service, it is directly called by running the OnStart method.

When we send a command to stop a service in the services console or through the command line, SCM calls the OnStop method to stop it.

In addition to these two methods in the service class, you can override several more methods of the ServiceBase base class:

    OnPause: Called when the service is paused

    OnContinue: Called when a service resumes after it has been suspended

    OnShutdown: Called when Windows shuts down

    OnPowerEvent: Called when the power mode changes

    OnCustomCommand: Called when a service receives a custom command from the Service Control Manager (SCM)

In the constructor of the Service1 class, the InitializeComponent() method is called, which is defined in the designer file Service1.Designer.cs:

Namespace FileWatcherService ( partial class Service1 ( private System.ComponentModel.IContainer components = null; protected override void Dispose(bool disposing) ( if (disposing && (components != null)) ( components.Dispose(); ) base.Dispose(disposing ); ) private void InitializeComponent() ( components = new System.ComponentModel.Container(); this.ServiceName = "Service1"; ) ) )

The only thing that needs to be noted in it is setting the name of the service (ServiceName property):

This.ServiceName = "Service1";

This is the name that will be displayed in the services console after installing this service. We can change it, or we can leave it as it is.

Now let's change the service code as follows:

Using System; using System.ServiceProcess; using System.IO; using System.Threading; namespace FileWatcherService ( public partial class Service1: ServiceBase ( Logger logger; public Service1() ( InitializeComponent(); this.CanStop = true; this.CanPauseAndContinue = true; this.AutoLog = true; ) protected override void OnStart(string args) ( logger = new Logger(); Thread loggerThread = new Thread(new ThreadStart(logger.Start)); loggerThread.Start(); ) protected override void OnStop() ( logger.Stop(); Thread.Sleep(1000); ) ) class Logger ( FileSystemWatcher watcher; object obj = new object(); bool enabled = true; public Logger() ( watcher = new FileSystemWatcher("D:\\Temp"); watcher.Deleted += Watcher_Deleted; watcher.Created + = Watcher_Created; watcher.Changed += Watcher_Changed; watcher.Renamed += Watcher_Renamed; ) public void Start() ( watcher.EnableRaisingEvents = true; while(enabled) ( Thread.Sleep(1000); ) ) public void Stop() ( watcher.EnableRaisingEvents = false; enabled = false; ) // renaming files private void Watcher_Renamed(object sender, RenamedEventArgs e) ( string fileEvent = "renamed to " + e.FullPath; string filePath = e.OldFullPath; RecordEntry(fileEvent, filePath); ) // changing files private void Watcher_Changed(object sender, FileSystemEventArgs e) ( string fileEvent = "changed"; string filePath = e.FullPath; RecordEntry(fileEvent, filePath); ) // creating files private void Watcher_Created(object sender, FileSystemEventArgs e) ( string fileEvent = "created"; string filePath = e.FullPath; RecordEntry(fileEvent, filePath); ) // deleting files private void Watcher_Deleted(object sender, FileSystemEventArgs e) ( string fileEvent = "deleted"; string filePath = e.FullPath; RecordEntry(fileEvent, filePath); ) private void RecordEntry(string fileEvent, string filePath) ( lock (obj) ( using (StreamWriter writer = new StreamWriter("D:\\templog.txt", true)) ( writer.WriteLine(String.Format("(0) file (1) was (2)", DateTime.Now.ToString("dd/MM/yyyy hh:mm:ss"), filePath, fileEvent)); writer. Flush(); ) ) ) ) )

The key class that encapsulates all the functionality is the Logger class. Using the FileSystemWatcher object, it will monitor changes in the folder D://Temp. The Start() method specifies that we will watch for changes through the FileSystemWatcher object. And all the work will continue as long as the enabled boolean variable is true . And the Stop() method will allow the class to terminate.

FileSystemWatcher events allow you to monitor all changes to a watched folder. This will record changes to the templog.txt file. To avoid resource race for the templog.txt file, into which changes are recorded, the recording procedure is blocked by the lock(obj) stub.

As a result, after creating, changing, renaming and deleting, the log file will contain something like:

07/30/2015 12:15:40 file D:\Temp\New text document.txt was created 07/30/2015 12:15:46 file D:\Temp\New text document.txt was renamed to D:\Temp\hello. txt 07/30/2015 12:15:55 file D:\Temp\hello.txt was modified 07/30/2015 12:15:55 file D:\Temp\hello.txt was modified 07/30/2015 12:16:01 file D: \Temp\hello.txt has been deleted

In the Service1 service class itself, a number of options are set in the constructor:

This.CanStop = true; // the service can be stopped this.CanPauseAndContinue = true; // the service can be paused and then continued this.AutoLog = true; // the service can write to the log

In the OnStart() method, a new thread is called to start the Logger object:

Protected override void OnStart(string args) ( logger = new Logger(); Thread loggerThread = new Thread(new ThreadStart(logger.Start)); loggerThread.Start(); )

The new thread is needed because the current thread only processes SCM commands and must return from the OnStart method as quickly as possible.

When a command is received from the SCM to stop the service, the OnStop method is triggered, which calls the logger.Stop() method. The additional delay will allow the logger thread to stop:

Protected override void OnStop() ( logger.Stop(); Thread.Sleep(1000); )

However, the service class itself is not enough. We also need to create a service installer.

Hello dear readers, today I would like to talk about:

1. ABOUT Windows services, what it is, what it is needed for and which ones are responsible for what.

2.And how can you increase the speed of your computer?

So what are these Windows services?

Services- applications that are automatically or manually launched by the system when Windows starts and perform various tasks regardless of the user’s status.

Open list of services can be done in several ways:

1. Hold down the windows button and press R, a window will open, enter services.msc there

2. Start > Control Panel > Administrative Tools > Services

3. Start > right-click on my computer > Manage > Services and Applications > Services

As you can see, there are quite a lot of them in Windows and by downloading, you can familiarize yourself what services exist and what each of them is responsible for.

Since services are applications, they operate and use some of the computer's resources. you can improve its performance. Let's see what can be disabled.

What services can be disabled in Windows 7, 8

I did not make a list of those services that can be disabled, because... many services are individual. I just tried to describe each service and in what situations they can be disabled. If you need to turn something off mindlessly, then just use .

* BranchCache The service caches network content. If you don't use your home network, you can turn it off altogether.

* DHCP client - If you use the Internet, do not touch it under any circumstances. It is this service that assigns you an IP address.

* DNS client — It is also a necessary service for using the Internet. Works with your DNS (serves in the right directions).

* KtmRm for distributed transaction coordinator - system transaction function. We leave it the same way.

* Microsoft .NET Framework - We leave all such services as is. They serve for the normal operation of most applications.

* Parental Controls - Parental control service. If you don't use it, you can turn it off.

* Plug-and-Play serves for automatic recognition of changes in the system. For example, when you connect a flash drive, this service wakes up... So we leave it as it is.

* Quality Windows Audio Video Experience - transmission of audio and video over the network in real time. It is not needed only if there is no network (or Internet), in other cases we leave it.

* Remote Desktop Configuration - For remote desktop. If you do not use remote connections, disable it.

* Superfetch Useful feature, works with cache. Speeds up Windows, so leave it.

* Windows Audio - Controls sound. If you don't need the sound, turn off the sound. In other cases we leave it.

* Windows CardSpace - unnecessary and unsafe service. That's why we turn it off.

* Windows Driver Foundation - User-mode Driver Framework - For normal operation of the drivers, do not touch. Let it remain as it is.

* Windows Search - Indexing files for search. If you don’t use it and have time to wait until the file is found, then disable it. Be sure to disable it on the ssd!

* WMI Performance Adapter - needed for services that require wmi, install manually. If any applications need them, they will launch them themselves)

* WWAN auto-configuration - service for using mobile Internet. If you use a usb modem or SIM card in your laptop, do not disconnect it.

* Offline files - helps you work autonomously with inaccessible files that were downloaded before. We set it manually.

* Network Access Protection Agent - We set it manually, because... if necessary, the service will start if some program requests the necessary information.

* AIPsec policy gent - Needed if you have a network and the Internet.

* Adaptive Brightness Control - Leave it if there is a light sensor.

* Windows Backup - If you don't use it, turn it off. But it’s better to read about archiving in Windows, you never know, you’ll use it.

* Windows Biometric Service - needed only when using biometric devices. In other cases we disable it.

* Windows Firewall - To be honest, I always turn it off, because... I have nothing to steal) And if they encrypt the data, I will restore it) But I advise you to get, for example, Kaspersky Internet Security, which has both an antivirus and a firewall. And turn this one off, because... it sometimes blocks things that are not needed) In general, it monitors the security of your computer and closes ports so that thieves cannot get into your computer)

* Computer browser — There is no need for a home network. Manually.

* Web client - It's boring if you don't have internet. Used to work with files on the Internet. We leave it.

* Virtual disk - Service for working with storage devices. We set it manually.

* IP Ancillary Service - Works with protocol version 6. I always disable it itself, so the service can be disabled altogether.

* Secondary login - Set it manually, because... some games or programs will enable it if necessary.

* Grouping of network participants - Needed for home group. Install manually, you never know...

* Disk Defragmenter - In principle, it does not interfere. You can leave it or turn it off. If you turn it off, I recommend doing it once a month. And for ssd drives, we disable it altogether!

* Automatic Remote Access Connection Manager - We set it manually. Needed for remote connections.

* Print Manager - Needed if you have something to print from. In other cases we disable it.

* Remote Access Connection Manager - manually. Once I disconnected it completely and could not create a connection. So it's better to do it manually.

* Desktop Window Manager Session Manager − If you don’t use transparency from Aero, you can turn it off, it will give a big boost.

* Network Member Identity Manager − It's better to set it manually.

* Credential Manager - Better by hand. Stores your data, such as logins and passwords.

* Security Account Manager - It's better to leave it as is. If you disable this service, all changes to the local security policy will be lost.

* Access to HID devices - Access to shortcut keys. Disable it, if some combinations stop working, then put it back.

* Windows Event Log - records all events. A useful tool for the experienced user. It is impossible to disable.

* Performance Logs and Alerts - system service, leave it as is.

* Software Protection - Also a system service, leave it as is.

* Windows Defender - Protection against spyware and malware. Install a normal antivirus and disable this service.

* CNG Key Isolation - Manually.

* Windows Management Instrumentation - System service, without it, some applications may not work correctly, so it’s better to leave it.

* Application Compatibility Information - A useful thing, it helps launch applications that refuse to run on your OS. We set it manually.

* Group Policy Client - We leave it. Responsible for security policy settings.

* Changed Link Tracking Client - Tracking ntfs files is not necessary. Turn it off.

* Distributed Transaction Coordinator - We set it manually.

* Windows Presentation Foundation font cache - We set it manually. Applications will launch it if necessary.

* SNMP Trap - Some programs will collect information about you. So turn it off.

* Remote Procedure Call (RPC) Locator - Manually, if necessary, applications will launch it.

* Routing and remote access - Need not. Turn it off.

* IPsec Key Modules for Internet Key Exchange and Authenticated IP - Not necessary, but better to do it manually.

* DCOM server process launcher module - System service, leave it as is.

* NetBIOS support module over TCP/IP - If there are no other computers on the network, then manually.

* Windows Instant Connections - Setup Logger - Manually.

* SSDP Discovery - Leave it as is. Required for new devices.

* Interactive Service Discovery − Manually.

* Internet Connection Sharing (ICS) - Not needed if you do not share your Internet over network connections.

* Shell Hardware Definition − necessary for the autorun dialog box of a disk or flash drive. Whatever suits you, most people need it. I left.

* Basic TPM services − Only needed to use TMP and/or BitLocker chips.

* Remote Desktop Services User Mode Port Redirector - If you don't use remote connections, then you don't need it. It's better to install it manually.

*PIP bus enumerator PnP-X — It's better to install it manually.

* Nutrition - Doesn't turn off. We leave it.

* Task Scheduler - It is advisable to leave it as is, because... Now many programs use it.

* Media Class Scheduler − We leave it to those for whom sound is important.

* Support for the "Problem and Resolution Reports" control panel item - Manually.

* Smart Card Removal Policy - For smart card users, it is better to do it manually.

* HomeGroup Provider - To use home groups. Better by hand.

* Wired Auto-Tuning - Manually.

* Software Shadow Copy Provider (Microsoft) - Manually.

* Homegroup Listener - Manually.

* PNRP protocol - We also leave it manually. Some applications may use the service.

* Publishing Feature Discovery Resources − Needed if you want to show your files to other computers over the network. If you don't want to, then manually or disable it.

* Work station - It's better to leave it, because... Some applications use this service.

* Certificate Distribution − Better by hand.

* Extensible Authentication Protocol (EAP) - Manually.

* Windows Event Collector - Manually.

* Application Details - Manually.

* Server - If the computer is not used as a server or does not share access to files and printers, then turn it off.

* Thread Ordering Server - Disable if there is no home group.

* Network Login - Manually.

* Network connections - Leave it as is. If there is no network or Internet, you can turn it off.

* COM+ Event System - set manually. Applications that depend on this service will launch it themselves if necessary.

* COM+ System Application - Also manually.

* SSTP Service - We leave it as is, the service is needed if there is Internet on the computer.

* WinHTTP Web Proxy Automatic Discovery Service - If you need internet, then leave it as is.

* WLAN AutoConfig Service - service for wireless networks. Accordingly, if they are not there, it is not needed.

* Basic Filtering Service - on the one hand, it is not needed (if security is not needed), but on the other hand, some programs may produce errors. So we leave it.

* Tablet PC Input Service - If the screen is not touch-sensitive, then it is not needed.

* Windows Time Service - needed to synchronize time with the Internet.

* Windows Image Upload Service (WIA) - The service is only needed if there is a scanner. She is responsible for receiving images from scanners and cameras.

* Microsoft iSCSI Initiator Service - We install it manually, if programs need it, they will launch it themselves.

* Network Saving Interface Service - Needed for normal network operation.

* Windows Font Cache Service - serves to improve performance, caches fonts and does not waste time loading.

* WITHMedia Center set-top box service - If you don't use any attachments, you don't need it.

* Block Level Archiving Engine Service - We set it manually. If archiving or restoration is needed, the service will start on its own.

* Net.Tcp Port Sharing Service - Off by default. Only needed if you need the Net.Tcp protocol.

* Windows Media Player Network Sharing Service - Manually. If you need it, it will turn on.

* Portable Device Enumerator Service - Used to synchronize music, videos, etc. with removable media. I would install it manually. This is not always necessary.

* Windows Media Center Scheduler Service - Needed if you only watch programs in Windows Media Player.

* Bluetooth Support - Needed if you have Bluetooth.

* Diagnostic Policy Service - Needed to diagnose problems... To be honest, it rarely helps. Therefore, you can experiment by turning it off. If necessary, turn it on.

* Program Compatibility Assistant Service - The service is needed to run programs that are incompatible with your OS. If there are none, install them manually.

* User Profile Service - Better to leave it. It works with computer user profiles.

* PNRP Computer Name Publishing Service - Needed for home groups.

* Windows Error Logging Service - Logs errors. It's better to install it manually.

* Windows Media Center Receiver Service - to watch TV and radio programs in the player.

* Connected Network Information Service - It is better to leave it as is for normal network operation.

* Network List Service - It's better to leave it that way.

* SPP Notification Service - For licensing. Leave by hand.

* System Event Notification Service - If you are not going to watch Windows messages, then you do not need it.

* Windows Remote Management Service (WS-Management) - Place it manually.

* BitLocker Drive Encryption Service - Encrypts disks. If you don't use it, it's better to turn it off.

* Application Layer Gateway Service − The service is needed only to work with the firewall. Manually.

* Cryptography Services - To install new programs, it is better to leave it as is.

* Remote Desktop Services - If you do not use remote desktops, then disable it.

* Smart card - If you don't use them, then you don't need it.

* RPC Endpoint Mapper - The service is needed for incoming traffic. Nothing can be done about it. That's why we leave it.

* Windows Audio Endpoint Builder - If you need sound, leave it.

* Telephony - Leave by hand. It will start if needed.

* Themes - They eat up a lot of memory resources. If you don't need it, turn it off.

* Volume Shadow Copy - Creates recovery points, backing up in the background. Place it manually. It will start if necessary.

* Link layer topologist - Also by hand. It will start if needed.

* Remote Procedure Call (RPC) - System service. Leave it as is.

* Remote registry - Allows remote users to manipulate your registry. Turn it off.

* Application Identity - Manually.

* Diagnostic system unit - Diagnosis of problems. Place it manually.

* Diagnostic Service Node - Also manually.

* Generic PNP Device Node - Place it manually. Not all devices are PnP.

* Application Management - Place it manually. The service allows you to configure policies for applications.

* Manage certificates and health key - Install it manually, if you need it, it will start on its own.

* ActiveX Installer - Also manually. You will need to install such an object, it will start on its own.

* Windows Installer - Installation of programs.msi. Manually.

* Windows Modules Installer - Installs and removes components and updates. Manually.

* Fax - Needed if you have a fax.

* Background Intelligent Transfer Service (BITS) - Leave it by hand. The service is useful.

* Discovery Provider Host - Leave it by hand. It will need to start.

* Windows Color System (WCS) - Manually. The devices will need it and they will launch it.

* Security Center - Monitors Windows security. She annoys me with her notifications. So whether to turn it off or not is up to you.

* Windows Update - On the one hand, a useful function. It closes holes in the system, updates drivers, but on the other hand, it actively uses the Internet, memory resources, and if you turn off the computer during the update, the OS may crash. So you also have to choose what is more important, security or performance.

* Encrypting File System (EFS) - For file security. It's better to leave it as is manually.

I tried to present the entire list of services. By disabling some, you will improve the performance of your computer. You can also decide at your own discretion which ones are needed and which ones are not. For example, if there is no Internet, then you can safely cut half of it; if there is no printer, then you can also turn off a lot. Thus, depending on your needs, you can significantly invigorate your old computer.

How to run an application as a Windows service ​



Is it possible to run a client application as a service? One of the articles contains ways to create a Windows service using standard OS tools. However, not every console application can run as a service, and programs with a graphical interface, in principle, cannot work in this way. But it is still possible to run the application as a service, and a program with an original name will help us with this Non-Sucking Service Manager.

NSSM is free and open source software and supports all Microsoft operating systems from Windows 2000 to Windows 8. NSSM does not require installation, just download and unzip it. The distribution includes versions for 32- and 64-bit operating systems. You can get the program from the website nssm.cc, at the moment the latest stable version is 2.21.1, which I will use.
To demonstrate the capabilities of NSSM, let's try running Windows Notepad as a service on Windows 8.1.

Creating a Service

To create a service named notepad launch the command console, go to the folder with the unpacked NSSM (for 64-bit Windows) and enter the command

Code:

Nssm install notepad

which opens the NSSM graphical installer window. To create a service, just specify the path to the executable file in the Path field and click the “Install service” button. Additionally, in the Options field you can specify the keys required to start the service.

You can also specify some additional parameters when creating a new service.

The Shutdown tab lists the shutdown methods and timeouts used when the application shuts down normally or crashes. When NSSM receives a stop command (for example, when an application is shut down), it attempts to stop the controlled application in a normal manner. If the application does not respond, then NSSM can forcefully terminate all processes and subprocesses of this application.

There are four steps to shutting down the application, and by default they will be used in this order:

In the first step, NSSM tries to generate and send a Ctrl+C event. This method works well for console applications or scripts, but is not applicable for graphical applications;
NSSM then detects all windows created by the application and sends them a WM_CLOSE message, causing the application to exit;
The third step is that NSSM calculates all threads created by the application and sends them a WM_QUIT message, which will be received if the application has a thread message queue;
As a last resort, NSSM can call the TerminateProcess() method, forcing the application to terminate.

It is possible to disable some or even all methods, but different methods work for different applications and it is recommended to leave everything as is to ensure the application shuts down correctly.

By default, when a service crashes, NSSM tries to restart it. On the “Exit actions” tab, you can change the automatic action when the application terminates abnormally, as well as set a delay before the application automatically restarts.

On the “Input/Output (I/O)” tab, you can set the redirection of application input/output to a specified file.

On the “Environment” tab, you can set new environment variables for the service, or override existing ones.

You can also not use the graphical shell and immediately create a service in the console with the following command:

Code:

Nssm install notepad "C:\Windows\system32\notepad.exe"

Service management

After creating the service using NSSM, go to the Services snap-in and find the notepad service. As you can see, in appearance it is no different from other services; we can also start it, stop it, or change the launch mode. However, note that nssm.exe is listed as the executable file.

And if we go to Task Manager, we will see the following picture: NSSM is running as the main (parent) process, the notepad service is running as its child process, and the Notepad application is already running in this child process.

You can configure the operation of services in a special Windows manager. To open it, use the Windows + R key combination, enter services.msc in the line that appears and press Enter. You will see the same or similar (if you have one of the older OS versions) window:

The manager displays services in table form. Here you can view a list of available services, read their brief descriptions, and find out their current status. Of particular importance is the “Startup Type” column. It is he who shows whether a specific service is enabled and in what mode it is launched by the system.

By double-clicking on one of the services, you will open a window in which you can disable it. Just open the “Startup Type” item, select “Disabled” and click “OK”. But among other launch options there is a “Manual” value. For security reasons, select this for all services that you want to disable. This will allow the system to start services when they are really needed, and not waste time on them the rest of the time.

Do not disable services completely, but only switch them to manual mode.

The services listed below are not critical to the operation of the system, and many users can do without them. Therefore, you can set these services to manual mode. Be sure to read the summary before making changes so you don't interrupt services that matter to you.

Some services on our list may already be completely disabled on your PC or initially work in manual mode. In that case, just skip them.

Incorrect actions during the process of configuring services can lead to incorrect operation of the system. By making changes, you take responsibility.

For the changes to take effect, be sure to restart your PC after configuration.

Windows services that can be switched to manual mode

The Russian names of some services on this list may differ from those that you see on your computer. But this only applies to wording. If you cannot find the service you need by its exact name, look for options that are similar in meaning.

Windows 10

  • Functionality for connected users and telemetry (Connected User Experiences and Telemetry).
  • Diagnostic Tracking Service.
  • dmwappushsvc.
  • Downloaded Maps Manager - if you are not using the Maps application.
  • Touch Keyboard and Handwriting Panel Service.
  • Windows Defender Service.

Windows 8/8.1

  • Diagnostic Policy Service.
  • Distributed Link Tracking Client - if the computer is not connected to any network.
  • IP Helper - if you are not using an IPv6 connection.
  • Program Compatibility Assistant Service.
  • Print Spooler - if you don't have a printer.
  • Remote Registry - this service can be completely disabled.
  • Secondary Logon.
  • Security Center.
  • NetBIOS support module over TCP/IP (TCP/IP NetBIOS Helper).
  • Windows Error Reporting Service.
  • Windows Image Acquisition (WIA) - if you don't have a scanner.
  • Windows Search - if you don't use Windows Search.

Windows 7

  • Computer Browser - if the computer is not connected to any network.
  • Diagnostic Policy Service.
  • Distributed Link Tracking Client - if the computer is not connected to any network.
  • IP Helper - if you are not using an IPv6 connection.
  • Offline Files.
  • Portable Device Enumerator Service.
  • Print Spooler - if you don't have a printer.
  • Protected Storage.
  • Remote Registry - this service can be completely disabled.
  • Secondary Logon.
  • Security Center.
  • Server - if the computer is not used as a server.
  • NetBIOS support module over TCP/IP (TCP/IP NetBIOS Helper).
  • Windows Error Reporting Service.
  • Windows Search - if you don't use Windows Search.

Windows Vista

  • Computer Browser - if the computer is not connected to any network.
  • Desktop Window Manager Session Manager - if you are not using the Aero theme.
  • Diagnostic Policy Service.
  • Distributed Link Tracking Client - if the computer is not connected to any network.
  • Offline Files.
  • Portable Device Enumerator Service.
  • Print Spooler - if you don't have a printer.
  • ReadyBoost.
  • Remote Registry - this service can be completely disabled.
  • Secondary Logon.
  • Security Center.
  • Server - if the computer is not used as a server.
  • Tablet PC Input Service.
  • NetBIOS support module over TCP/IP (TCP/IP NetBIOS Helper).
  • Themes - if you are using the classic Windows theme.
  • Windows Error Reporting Service.
  • Windows Media Center Service Launcher.
  • Windows Search - if you don't use Windows Search.

Windows XP

  • Alerter.
  • Computer Browser - if the computer is not connected to any network.
  • Distributed Link Tracking Client - if the computer is not connected to any network.
  • Indexing Service - if you don't use Windows Search.
  • Internet Firewall (ICF) / Internet Connection Sharing (ICS).
  • Messenger service.
  • Remote Registry - this service can be completely disabled.
  • Secondary Logon.
  • Server - if the computer is not used as a server.
  • System Restore service.
  • NetBIOS support module over TCP/IP (TCP/IP NetBIOS Helper).
  • Uninterruptible Power Supply.
  • Upload Manager.
  • Wireless configuration (Wireless Zero Configuration).

Operating modes

In most cases, services are prohibited from interacting with the console or desktop of users (both local and remote), but for some services an exception is possible - interaction with the console (session number 0 in which the user is registered locally or when the service starts mstsc with the /console switch).

There are several modes for services:

  • prohibited from launching;
  • manual start (on request);
  • automatic startup when the computer boots;
  • automatic (delayed) launch (introduced in Windows Vista and Windows Server 2008);
  • mandatory service/driver (automatic start and inability (for the user) to stop the service).

Background mode

Start, stop, and change Windows services

Services and their attributes can be changed in the MMC:

Different versions of operating systems may have some services and not others. Some applications and programs that are installed separately can also create their own services.

List of Microsoft Windows operating system services

Display name Service name Functions Description
DHCP client Dhcp Registers and updates IP addresses and DNS records for this computer. If this service is stopped, this computer will not be able to obtain dynamic IP addresses and perform DNS updates.
DNS client Dnscache The DNS Client service (dnscache) caches Domain Name System (DNS) names and registers the fully qualified name of a given computer. If the service is stopped, DNS name resolution will continue. However, the results of DNS name queues will not be cached and the computer name will not be registered.
KtmRm for distributed transaction coordinator KtmRm Coordinates transactions between MSDTC and the Kernel Transaction Manager (KTM).
ReadyBoost EMDMgmt ReadyBoost Support for improving system performance using ReadyBoost technology.
Superfetch SysMain Superfetch Maintains and improves system performance.
Windows Audio Audiosrv Managing audio tools for Windows programs. If this service is stopped, audio devices and effects will not work correctly.
Windows CardSpace idsvc Provides a secure ability to create, manage, and expose digital identities.
Automatic update WUAUSERV Includes downloading and installation of Windows updates. If the service is disabled, this computer will not be able to use Automatic Updates or the Windows Update Web site.

List of services created by Microsoft applications and programs

List of services created by applications and programs from other manufacturers

see also

List of Windows services

Links

  • pcs.suite101.com/article.cfm/index_of_services: Index of Windows XP Services - An Index of the Services running on Windows XP operating system
  • How to remove a service in Windows Vista or Windows XP
  • Windows XP Services (Russian)

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