Application Layer Gateway Service - Windows 10 Service
Provides support for 3rd party protocol plug-ins for Internet Connection Sharing.
This service also exists in Windows 11, 8, Vista and XP.
Startup Type
| Windows 10 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 1507 | Manual | Manual | Manual | Manual |
| 1511 | Manual | Manual | Manual | Manual |
| 1607 | Manual | Manual | Manual | Manual |
| 1703 | Manual | Manual | Manual | Manual |
| 1709 | Manual | Manual | Manual | Manual |
| 1803 | Manual | Manual | Manual | Manual |
| 1809 | Manual | Manual | Manual | Manual |
| 1903 | Manual | Manual | Manual | Manual |
| 1909 | Manual | Manual | Manual | Manual |
| 2004 | Manual | Manual | Manual | Manual |
| 20H2 | Manual | Manual | Manual | Manual |
| 21H1 | Manual | Manual | Manual | Manual |
| 21H2 | Manual | Manual | Manual | Manual |
| 22H2 | Manual | 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 is running as NT AUTHORITY\LocalService in its own process of alg.exe. It doesn't share its process with other services. If Application Layer Gateway Service fails to start, the error is logged. Windows 10 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 10 edition and release, and then click on the Download button below.
2. Save the RestoreApplicationLayerGatewayServiceWindows10.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 10 installation media.