alg.exe is a program which is most likely NOT a virus or malware. So, if alg.exe is on your system, it is most likely ok, and will NOT be a cause for concern. Even if your system is clean, it is still recommended to purchase a well-known antivirus with a good detection rate, in order to defend your system against threats.
This program is normally found on disk in C:\Windows\System32\alg.exe.
The MD5 fingerprint for this file is 2df4759ae499ceb7a4a81a50bed5d056.
This program is registered as a Windows service. This means it operates on your PC in background, usually without showing anything to you. Most Windows services are ok programs, which provide useful features to other applications or to Windows in general.
alg.exe appears to have something to do with Windows SFC (System File Checker) or Windows File Protection.
This application runs in 32-bit mode. It does not benefit of the entire power of nowadays' computer CPUs. This ordinarily happens because the authors did not upgrade it to use the x64 instruction set.
The description written in the file is Application Layer Gateway Service.
File version 10.0.10586.0 (th2_release.151029-1700).
Company name Microsoft Corporation.
Legal copyright © Microsoft Corporation. All rights reserved..
alg.exe has a digital signature. Today the large majority of serious software applications are digitally signed.
The digital signature extracted from alg.exe checks out perfectly. This is most likely a clean, ok program.
Digitally signed by: Microsoft Windows
Certificate's issuer name: Microsoft Windows Production PCA 2011
This program does NOT have a removal routine stored in registry.