What is QCDmmkb.dll?

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

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QCDmmkb.dll file information

The process known as QCDmmkb belongs to software Quintessential Player or Quintessential Media Player by Quinnware (

Description: QCDmmkb.dll is not essential for the Windows OS and causes relatively few problems. The file QCDmmkb.dll is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 6,656 bytes (83% of all occurrences) or 7,680 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. There is no detailed description of this service. It can change the behavior of other programs or manipulate other programs. The QCDmmkb.dll file is not a Windows system file. There is no description of the program. QCDmmkb.dll is able to record keyboard and mouse inputs. QCDmmkb.dll appears to be a compressed file. Therefore the technical security rating is 79% dangerous, however you should also read the user reviews.

Uninstalling this variant: The developer Quinnware provides a website for help [1][2] and for updates [1][2]. There is also an uninstaller (Control Panel ⇒ Uninstall a Program ⇒ Quintessential Player or Quintessential Media Player).

Recommended: Identify QCDmmkb.dll related errors

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

QCD/MSN "What I'm Listening To" Plug-In
  Johnny Groves   (further information)
Harmless. It doesn't do anything wrong. Tries to interpret keyboard special multimedia keys for Volume, Play/Pause, Mute, Previous/Next, and Stop functions.
It`s a dll pertaining to the Quintessential Player .It should be harmless , however it tries to be particularly intrusive , injecting itself into several processes on my machine ;chances are there`s some less known malware outhere either using it or impersonating one of its own dlls as qcdmmkb
  Alex Faber  
Quintessential Media Player

Summary: Average user rating of QCDmmkb.dll: based on 7 votes with 5 user comments. 7 users think QCDmmkb.dll is essential for Windows or an installed application. One user is not sure about it.

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Best practices for resolving QCDmmkb issues

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

QCDmmkb.dll [all]