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How to Change a Service's Startup Type in Batch Script

The startup type of a Windows service determines how and when it starts. An Automatic service starts when the computer boots, a Demand (Manual) service only starts when it is explicitly told to, and a Disabled service cannot be started at all. As an administrator, you often need to change a service's startup type as part of a software installation, a security hardening script, or a troubleshooting process.

This guide will teach you how to use the standard, built-in SC.EXE (Service Control) utility to change the startup type of any service from a batch script. You will learn the different startup types and the critical requirement of running your script as an administrator.

The Core Command: SC CONFIG​

The sc.exe utility is the primary command-line tool for all service management. To modify a service's properties, we use the config command.

The syntax for changing the startup type is: SC CONFIG "<ServiceName>" start=<StartupType>

  • CONFIG: The sub-command to configure a service's properties.
  • <ServiceName>: The short, internal name of the service (not its Display Name).
  • start=: The specific parameter we are changing.
  • <StartupType>: The new startup mode you want to set.

This command must be run with administrator privileges.

The Startup Types Explained​

You can set the start= parameter to one of four main values:

Startup TypeDescription
autoAutomatic. The service starts when the computer boots up.
delayed-autoAutomatic (Delayed Start). The service starts shortly after the system has finished booting, which can improve boot performance.
demandManual. The service must be started manually (e.g., with NET START) or by another application.
disabledDisabled. The service cannot be started at all.

Basic Example: Changing a Service to Disabled​

Let's disable the "Windows Update" service (wuauserv). This is a common action during certain sensitive system maintenance tasks.

@ECHO OFF
REM This script MUST be run as an Administrator.

SET "ServiceName=wuauserv"
ECHO --- Changing Service Startup Type ---
ECHO.
ECHO Disabling the '%ServiceName%' service...

SC CONFIG "%ServiceName%" start=disabled

IF %ERRORLEVEL% EQU 0 (
    ECHO [SUCCESS] The service startup type has been changed.
) ELSE (
    ECHO [FAILURE] The command failed. Are you running as an Administrator?
)

How the Command Works​

The SC CONFIG command directly modifies the registry values associated with the specified service, which are located under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services. Specifically, it changes the Start value in the service's key. The Windows Service Control Manager reads this value at boot time and when a NET START command is issued to determine how to handle the service.

Common Pitfalls and How to Solve Them​

Problem: The Script is Not Run as Administrator​

This is the number one reason SC CONFIG fails. Modifying a system service is a highly privileged operation.

Example of error message:

[SC] OpenService FAILED 5:

Access is denied.

Solution: The script must be run from an elevated command prompt. Right-click your .bat file or cmd.exe and select "Run as administrator."

Problem: Using the Wrong Service Name​

You must use the internal Service Name, not the friendly Display Name that you see in the services.msc graphical interface.

Display NameService Name
Windows Updatewuauserv
Print SpoolerSpooler
Task SchedulerSchedule

Solution: Use the SC QUERY command to find the correct SERVICE_NAME.

C:\> SC QUERY | find "DISPLAY_NAME: Print Spooler"
DISPLAY_NAME: Print Spooler

C:\> SC QUERY Spooler | find "SERVICE_NAME"
SERVICE_NAME: Spooler

The script SC GETKEYNAME "Display Name" is also a great tool for this.

Problem: The Space After start= is Required​

This is a quirky but critical syntax requirement of the SC command. If you omit the space after the equals sign, the command will fail.

Example of script with error:

REM This is WRONG and will fail.
SC CONFIG "MyService" start=auto

Example of correct script:

REM This is CORRECT. Note the space after start=
SC CONFIG "MyService" start= auto
note

For delayed-auto, demand, and disabled, the space is also required.

Practical Example: A Security Hardening Script​

This script is designed to disable several services that are often considered non-essential in a secure server environment, reducing the system's attack surface.

@ECHO OFF
SETLOCAL
TITLE Security Hardening Script
REM This script must be run as an Administrator.

ECHO --- Disabling Non-Essential Services ---
ECHO This script will change the startup type of several services to 'Disabled'.
ECHO.
PAUSE

REM --- A pseudo-array of services to disable ---
SET "ServicesToDisable=Fax PrintNotify lmhosts"

FOR %%S IN (%ServicesToDisable%) DO (
    ECHO.
    ECHO Disabling service: %%S...
    SC CONFIG "%%S" start= disabled
)

ECHO.
ECHO --- Hardening complete ---
ENDLOCAL

Conclusion​

The SC CONFIG command is the definitive tool for programmatically changing a service's startup type. It provides complete control over how services are started, making it an essential command for any administrative batch script.

Key takeaways for using it successfully:

  • You must run the script as an Administrator.
  • Use the syntax SC CONFIG "ServiceName" start= <StartupType>.
  • Remember the critical space after the equals sign (e.g., start= auto).
  • Always use the correct internal Service Name, which you can find with SC QUERY.

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