What is KeyHook.dll?

The genuine KeyHook.dll file is a software component of Sony Utilities DLL by Sony.
KeyHook.dll is a DLL (dynamic link library) file. DLL files store data, code and resources needed by one or more programs in order to function correctly. This file recognizes keystrokes from the keyboard and is used to map global hotkeys for certain applications. Sony started off at the beginning of World War 2 as an electronics shop in Tokyo. Owned by Masaru Ibuka, it took up space in a department store and began operations with only $530 in capital and eight employees. Tokyo Tsushin Kogyo (Tokyo Telecommunications Engineering Corporation), as it was originally called, built Japan's first Tape recorder, the Type-G. In 1958, the company changed its name to Sony. Today, the Sony corporation is among the world's largest companies which operates under four segments - Electronics, Motion pictures, Music and Financial Services.

KeyHook stands for Key Hook for Hotkey Recognition

KeyHook.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if KeyHook.dll is a Windows system file or if it belongs to an application that you can trust.

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KeyHook.dll file information

The process belongs to software Sony Utilities DLL or Spell Checker or PDF Explorer by unknown.

Description: KeyHook.dll is not essential for the Windows OS and causes relatively few problems. KeyHook.dll is located in a subfolder of "C:\Program Files\Common Files"—mostly C:\Windows\ or C:\Program Files\3rdeye\. The file size on Windows 10/8/7/XP is 24,576 bytes. 
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. There is no file information. The program is not visible. The service has no detailed description. The file is able to record keyboard inputs. It is not a Windows core file. KeyHook.dll is able to record keyboard and mouse inputs. KeyHook.dll appears to be a compressed file. Therefore the technical security rating is 100% dangerous, however you should also read the user reviews.

Uninstalling this variant: You can also uninstall Sony Utilities DLL software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 10/8/7).

Recommended: Identify KeyHook.dll related errors

Important: Some malware also uses the file name KeyHook.dll, for example Mal/Hook-A (detected by Sophos), and Trojan.Generic.1562047 (detected by BitDefender). Therefore, you should check the KeyHook.dll 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.


User Comments

ProductName=Sony Utilities DLL (Sony VAIO utility dll on sony shared lib)
  Andres Stäubli  
program "Spybot - Search end destroy" detect it , but what it is i dont know
sony utility
on my laptop it allows me to use the f keys for volume control and brightness of the screen.
Used in a software that I have that converts a sequence of keystrokes into accented foreign language characters.
on my laptop it allows me to use the f keys for volume control and brightness of the screen.
Sony utility for some function keys.
xStarter dll
  10   (further information)
I'm almost sure, that it is new modification/part of netbus (remote administration tool)
Size 15360 bytes. Belong to a program called Quick Info used to publish PowerPoint presentations on remote computers (commercial software)
  Sofaking   (further information)
Used as a dll file for the Call of Duty miniadmin3 rcon tool
it is part of the virus called netbus.
It is save in miniadmin avira tested it.
  redgdk (   (further information)
used with KVM switch, should be ok
Installed with my KVM switch, 94.208 bytes (listed in the uninstall.log).
  Alemao   (further information)
The dll file itself is NOT dangerous. It is able to recognize keystrokes from your keyboard and is normally used to register global hotkeys for applications. Since the dll file could be used by malware too, i.e. from a keylogger, it's never wrong to do a full system scan with your anti virus software to make sure it did not come with some malware executable file (i.e. .exe, .com, ...). On the other hand, without any additional malware executable file, the dll itself is harmless. Also any malware itself could just do the same as the dll and therefor not need it.

Rating chart

Summary: Average user rating of KeyHook.dll: based on 23 votes with 16 user comments. 10 users think KeyHook.dll is essential for Windows or an installed application. 5 users think it's probably harmless. 5 users think it's neither essential nor dangerous. 3 users think KeyHook.dll is dangerous and recommend removing it. One user is not sure about it.

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Best practices for resolving KeyHook issues

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

KeyHook.dll [all]