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What is Hook.dll?

Hook.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. You can fix your Hook.dll problem by downloading the correct Hook.dll file. The following information can help you determine if Hook.dll belonging to the Windows system or an application you can trust.

Click to Run a Free Scan for Hook.dll related errors

Hook.dll file information

The process known as CapsAndNumKeyNotify or hook DLL or Direct Folders

belongs to software NetZero Internet or CapsAndNumNotifyDll or NetZero HiSpeed (remove only) or Juno Internet or NetZero or NetZero HiSpeed or ArcSoft PhotoImpression (version 5) or Window Master

by ASUS (www.asus.com) or Code Sector (codesector.com/).

Description: Hook.dll is not essential for Windows and will often cause problems. Hook.dll is located in a subfolder of "C:\Program Files". Known file sizes on Windows 7/XP are 69,632 bytes (48% of all occurrences), 208,792 bytes and 10 more variants. http://www.file.net/process/hook.dll.html 
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. The file is a file without information about the developer of this file. The program has no visible window. There is no detailed description of this service. The Hook.dll file is not a Windows core file. It can change the behavior of other programs or manipulate other programs. Hook.dll is able to record inputs. Therefore the technical security rating is 77% dangerous, however also read the users reviews.
The software vendor offers the option to do the following:

  • search for help on the company's website
  • completely remove Super Hybrid Engine or NetZero Internet (Control Panel⇒Add/Remove programs)

Recommended: Identify Hook.dll related errors

If Hook.dll is located in the folder C:\Windows\System32, the security rating is 98% dangerous. The file size is 3,584 bytes (58% of all occurrences), 4,096 bytes and 4 more variants. It is a file without information about the developer of this file. The program is not visible. It is able to record keyboard inputs. There is no detailed description of this service. The file is not a Windows core file. Hook.dll is able to record inputs.

If Hook.dll is located in a subfolder of C:\, the security rating is 96% dangerous. The file size is 28,672 bytes. There is no file information. The program has no visible window. There is no detailed description of this service. The Hook.dll file is able to record keyboard inputs. The Hook.dll file is not a Windows system file. Hook.dll is able to record inputs. Hook.dll seems to be a compressed file.

Important: Some malware camouflages itself as Hook.dll. Therefore, you should check the Hook.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

belongs to VMware application
  elena   (further information)
it might be part of netzero Hi-speed
its is related to net zero's operation
Its also used for spywhere and key loggers
this file monitors keystrokes ,relays that info to remote server at startup & subsequently tells net zero what type of garbage to download to your system.May be more dangerous since exe exe clones IE then write protects malware . note:soon after i installed net zero, my ad-awere se& spybot s&d were corrupted!!! beware there are a couple more bad guys hidden in nz software
after uninstalling netzero & then trying to reistall it, got error message saying couldn't "write" file hook.dll, click abort to stop install, retry to try to write file again or ignore to skip file....clicked ignore and now on internet, not sure if it is important or not...need more info plz
got new hard drive, win xp, downloaded net zero small version got the hook dll in the comp from there add on files that if u stop wont let u go onto net
Netzero plants the hook.dll in their package to monitor the customers!
  try run NIS and Netzero at same time  
It can be removed by Norton Antivirus
  Roberto   (further information)
I cannot claim to know that it is indeed dangerous, but I put it in quarantine and NetZero is still working. Therefore it can't be essential to the functioning of NetZero and is safe to remove.
  John Z  
steals passwords
  Webmaster   (further information)
hook.dll is commonly used to replace a certain if not all process of a targeted dll's memory on the fly. Correct me if i'm wrong. It can be dangerous (causing unwanted crash) or not (replacing memory hex for certain procedures).
it's VMware if you have VMware tool installed in a virtual machine
it's for proxyway
used for desktop enhancers (RKLauncher and more)
hook.dll is also part of Trust drivers for mice that have more than the standard 3 buttons. IT DOES keylog but in a legit way (it's required for the extra buttons on the mouse to work). If you are installing Trust drivers for a Trust mouse and has more than 3 buttons (inc Scrollwheel), this file may be flagged by your AV as a keylogger. Just allow the file.
  Dan W   (further information)
Part of Logitech's SetPoint
its also part of a mouse configuration software which is able to use programmable Macro instructions
allows attackers to access your computer from remote locations
  Benet   (further information)
It's to activate the special buttons on the "TRUST Gamer Optical Mouse GM-4200, without this file located in C:\Windows\System32\Hook.dll, you can't use the special buttons, and it will give you a message. File has been checked @ Avast 'nd AVG, Says this file that used for the mouse isn NOT a Dangerous file, and won't harm your computer.
not to be confused with hookdll.dll
Used by DirectFolders application (246Kb) and found within that app's folder
  potomac   (further information)
IOBit Advanced System Care rates Hook.dll as a Trojan, Its description is Infostealer.Bzup; risk level is critical and it resides in C:\Windows\System32\. ASC enttry during the Spyware Removal section of the program. There is just one thing that has me really concerned. I let the program (ASC) removethis item every time I scsan my computer, however, on the next scan (in as little as 5 seconds), Hook.dll is there one again. Is it because ASC cannot remove it or is it because it is immediately replaced on my computer? FInally, my computer seems to be working just fine.
  dgbvan   (further information)
It locks the software and we cannot open it even after a virus scan
  Shantanu Dhasal  
I need this file so my keylogger will function properly
its a trojan

Rating chart

Summary: Average user rating of Hook.dll: based on 29 votes with 26 user comments.
10 users think Hook.dll is essential for Windows or an installed application. One user thinks it's probably harmless. 3 users think it's neither essential nor dangerous. 3 users suspect danger. 12 users think Hook.dll is dangerous and recommend removing it. 6 users don't grade Hook.dll ("not sure about it").

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Hook scanner

Security Task Manager shows all running Windows tasks including embedded hidden functions (e.g. keyboard or browser monitoring, autostart entry). A unique security risk rating indicates the likelihood of the process being potential spyware, malware, keylogger or a Trojan.

Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, trojans, keyloggers, malware and tracking threats from your hard disk. Ideal supplement to Security Task Manager.

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Other processes

Hook.dll [all]