What is LPhal.exe?

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 LPhal.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.

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LPhal.exe file information

The process known as PHAL Service belongs to software PHAL or Logitech (version io2 Software) by Logitech (

Description: LPhal.exe is not essential for the Windows OS and causes relatively few problems. The file LPhal.exe is located in a subfolder of "C:\Program Files\Common Files". Known file sizes on Windows 10/8/7/XP are 397,312 bytes (83% of all occurrences) or 335,872 bytes. 
There is no information about the author of the file. The program has no visible window. LPhal.exe is not a Windows core file. The program listens for or sends data on open ports to a LAN or the Internet. LPhal.exe is able to record keyboard and mouse inputs and connect to the Internet. Therefore the technical security rating is 59% dangerous.

Uninstalling this variant: You could completely remove Logitech io2 Software (Control Panel ⇒ Uninstall a Program).

Recommended: Identify LPhal.exe related errors

If LPhal.exe is located in the C:\Windows\System32 folder, the security rating is 50% dangerous. The file size is 327,680 bytes. There is no description of the program. The program is not visible. The process can be removed using the Control Panel's Add\Remove programs applet. LPhal.exe is not a Windows system file. The process uses ports to connect to or from a LAN or the Internet. LPhal.exe is able to record keyboard and mouse inputs.

Important: Some malware camouflages itself as LPhal.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the LPhal.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


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Best practices for resolving LPhal issues

A clean and tidy computer is the key requirement for avoiding problems with LPhal. 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 LPhal.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.

Other processes

LPhal.exe [all]