batcmd.com Windows 7 Services

Application Layer Gateway Service - Windows 7 Service

Provides support for 3rd party protocol plug-ins for Internet Connection Sharing.

This service also exists in Windows 10, 8, Vista and XP.

Startup Type

Windows 7 edition without SP SP1
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Default Properties

Display name:Application Layer Gateway Service
Service name:ALG
Type:own
Path:%WinDir%\System32\alg.exe
Error control:normal
Object:NT AUTHORITY\LocalService
Privileges:
  • SeChangeNotifyPrivilege
  • SeCreateGlobalPrivilege
  • SeImpersonatePrivilege

Default Behavior

The Application Layer Gateway Service runs as NT AUTHORITY\LocalService in its own process. It does not share an executable file with other services. If the Application Layer Gateway Service fails to load or initialize, the error is recorded into the Event Log. Windows 7 startup should proceed, but a message box is displayed informing you that the ALG service has failed to start.

Restore Default Startup Type for Application Layer Gateway Service

Automated Restore

1. Select your Windows 7 edition and Service Pack, and then click on the Download button below.

2. Save the RestoreApplicationLayerGatewayServiceWindows7.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. Restart the computer to save changes.

Note. Make sure that the alg.exe file exists in the %WinDir%\System32 folder. If this file is missing you can try to restore it from your Windows 7 installation media.