What is CardHook.dll?

CardHook.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 CardHook.dll is a Windows system file or if it belongs to an application that you can trust.

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CardHook.dll file information

The process known as CardHook belongs to software CardHook Dynamic Link Library by PFU ( or PFU LIMITED (

Description: CardHook.dll is not essential for Windows and will often cause problems. CardHook.dll is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 81,920 bytes (75% of all occurrences), 77,824 bytes, 73,728 bytes or 95,232 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. The program has no visible window. The CardHook.dll file is able to record keyboard inputs. There is no detailed description of this service. The file is not a Windows system file. CardHook.dll is able to record keyboard and mouse inputs. Therefore the technical security rating is 91% dangerous, however you should also read the user reviews.

Uninstalling this variant: You have the option to safely remove the program using the uninstall program of CardMinder or ScanSnap Manager (Control Panel ⇒ Uninstall a Program).

Recommended: Identify CardHook.dll related errors

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

Comes with software called CardMinder included with the Fujitsu SnapScan Scanner.
  Net Software Group   (further information)
The file is a part of the program "Card Minder" which is a part of the software suite that comes with Fujitsu ScanSnap high speed scanner. It decodes scanned business cards and performs OCR on them.

Summary: Average user rating of CardHook.dll: based on 2 votes with 2 user comments. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous.

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Best practices for resolving CardHook issues

A clean and tidy computer is the key requirement for avoiding problems with CardHook. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the CardHook.dll process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

CardHook.dll [all]