alg.exe is a application which is probably NOT a virus. 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 purchase a good antivirus with a good detection rate, in order to yourself your system against threats.
Normally, this program is located in C:\WINDOWS\system32\alg.exe.
The MD5 checksum for this executable is f1958fbf86d5c004cf19a5951a9514b7.
This program is registered as a Windows service. This means it runs on your system in background, usually without showing any user interface to you. Most Windows services are ok programs, which perform useful functions to other programs or to the Windows Operating System.
This program runs as a 32-bit program. It does not use the full power of current PC processors. This ordinarily happens because the publishers did not bother to upgrade it to 64-bit code.
The description stored in the file is Application Layer Gateway Service.
File version 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158).
Company Microsoft Corporation.
Intellectual property rights notice © Microsoft Corporation. All rights reserved..
alg.exe is digitally signed. Today the large majority of legit programs are digitally signed.
The digital signature found in alg.exe verifies as ok. This is excellent.
Digital certificate name: Microsoft Windows Publisher
Certificate's issuer name: Microsoft Windows Verification Intermediate PCA
This application does NOT have a removal routine set up in registry.