The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the alg.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.
The process known as Application Layer Gateway Service or CPAX20 or Crypted Application or YVbUWzof
belongs to software Microsoft Windows Operating System or CPAX20 or NS2 or Projekt1 or Crypted Application or YVbUWzof
by Microsoft (www.microsoft.com) or SornSoft or VisioSoft PhotoAlbum or Basic or Application Layer Gateway Service.
Description: The original alg.exe from Microsoft is an important part of Windows, but often causes problems. Alg.exe is located in the C:\Windows\System32 folder.
Known file sizes on Windows 10/8/7/XP are 44,544 bytes (97% of all occurrences), 59,392 bytes and 22 more variants.
The program is not visible. Alg.exe is a trustworthy file from Microsoft. The software uses ports to connect to or from a LAN or the Internet. Alg.exe is able to connect to the Internet. Therefore the technical security rating is 17% dangerous, however you should also read the user reviews.
Recommended: Identify alg.exe related errors
Is alg.exe a virus? No, it is not. The true alg.exe file is a safe Microsoft Windows system process, called "Application Layer Gateway Service".
However, writers of malware programs, such as viruses, worms, and Trojans deliberately give their processes the same file name to escape detection. Viruses with the same file name are e.g. TrojanClicker:Win32/Klik or TrojanDownloader:Win32/Agent.OH (detected by Microsoft), and BKDR_AGENT.AVEM or TROJ_Generic.DIT (detected by TrendMicro).
To ensure that no rogue alg.exe is running on your PC, click here to run a Free Malware Scan.
How to recognize suspicious variants?
If alg.exe is located in the "C:\Program Files\Common Files" folder, the security rating is 29% dangerous. The file size is 33,205 bytes (33% of all occurrences), 33,792 bytes and 8 more variants. The program has a visible window. The application starts when Windows starts (see Registry key: MACHINE\Run, Run, RunOnce, User Shell Folders). Alg.exe is not a Windows core file.
If alg.exe is located in a subfolder of C:\Windows, the security rating is 56% dangerous. The file size is 40,962 bytes (25% of all occurrences), 106,496 bytes, 7,105,992 bytes or 843,776 bytes. It is not a Windows system file. There is no file information. The alg.exe file is located in the Windows folder, but it is not a Windows core file. The program has no visible window. Alg.exe is able to record keyboard and mouse inputs, connect to the Internet and monitor applications.
If alg.exe is located in a subfolder of the user's profile folder, the security rating is 53% dangerous. The file size is 131,072 bytes (25% of all occurrences), 527,872 bytes, 128,512 bytes or 963,286 bytes.
If alg.exe is located in the C:\Windows folder, the security rating is 84% dangerous. The file size is 311,296 bytes (33% of all occurrences), 15,872 bytes or 4,543,488 bytes.
If alg.exe is located in a subfolder of "C:\Program Files", the security rating is 46% dangerous. The file size is 4,734,006 bytes (50% of all occurrences) or 128,512 bytes.
If alg.exe is located in a subfolder of C:\, the security rating is 64% dangerous. The file size is 184,832 bytes.
If alg.exe is located in C:\, the security rating is 36% dangerous. The file size is 40,167 bytes.
Important: Some malware disguises itself as alg.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the alg.exe process on your PC to see if it is a threat. If Application Layer Gateway Service has changed your browser's search engine and start page, you can recover your browser's default settings as follows:Reset default browser settings for Internet-Explorer ▾
A clean and tidy computer is the key requirement for avoiding problems with alg. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.
Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.
To help you analyze the alg.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.