Application Layer Gateway Service - Windows Vista Service
Provides support for 3rd party protocol plug-ins for Internet Connection Sharing.
This service also exists in Windows 10, 11, 7, 8 and XP.
Startup Type
| Windows Vista edition | without SP | SP1 | SP2 |
|---|---|---|---|
| Starter | Manual | Manual | Manual |
| Home Basic | Manual | Manual | Manual |
| Home Premium | Manual | Manual | Manual |
| Business | Manual | Manual | Manual |
| Ultimate | Manual | Manual | Manual |
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: |
|
Default Behavior
The Application Layer Gateway Service starts as NT AUTHORITY\LocalService and runs in its own process of alg.exe. It does not share its process with other services. If Application Layer Gateway Service fails to start, the error is recorded into the Event Log. Windows Vista startup proceeds, but a message box is displayed informing you that the ALG service has failed to start.
Restore Default Startup Type of Application Layer Gateway Service
Automated Restore
1. Select your Windows Vista edition and Service Pack, and then click on the Download button below.
2. Save the RestoreApplicationLayerGatewayServiceWindowsVista.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 Vista installation media.