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Program info

Estimated safety rating


alg.exe is a program which is probably legit. So, if alg.exe is on your PC, it is probably ok, and will NOT be a cause for concern. Even if your PC is virus-free, we still advise you to run a well-known antivirus with a good track record, in order to defend yourself against potential security problems.

Executable file path


This program is normally stored in C:\Windows\System32\alg.exe.

MD5 hash of the executable file


The MD5 checksum for this program is a1545b731579895d8cc44fc0481c1192.

Is running as a service


This program is registered as a Windows service. This means it operates on your PC in background, usually without displaying any user interface to you. Most Windows services are legit programs, which perform useful features to other applications or to the Windows Operating System.

Belongs to the operating system


alg.exe appears to use the functions of Windows SFC (System File Checker) or Windows File Protection.

Is a 32 bit executable file


This executable runs in 32-bit mode. It can not use the full power of nowadays' PC CPUs. This is quite normal because the publishers did not upgrade it to 64-bit code.

File description

 Application Layer Gateway Service

The description stored in the exe is Application Layer Gateway Service.

File version

 6.0.6001.18000 (longhorn_rtm.080118-1840)

File version stored as a property 6.0.6001.18000 (longhorn_rtm.080118-1840).


 Microsoft Corporation

Maker Microsoft Corporation.


 © Microsoft Corporation. All rights reserved.

Intellectual property rights notice © Microsoft Corporation. All rights reserved..

Digitally signed


alg.exe is digitally signed. Today the large majority of serious programs are digitally signed.

Valid digital signature


The digital signature attached to alg.exe checks out perfectly. This is excellent.

Certifier name

 Microsoft Windows

Digital certificate name: Microsoft Windows

Issuer name

 Microsoft Windows Verification PCA

Certificate's issuer name: Microsoft Windows Verification PCA

Can be uninstalled


This application does NOT have an uninstall routine stored in registry.