What is moufiltr?

The genuine moufiltr.sys file is a software component of Microsoft Windows by Microsoft.
Moufiltr.sys is a filter driver that belongs to Microsoft Windows. A filter driver is a software program that adds functionality to peripheral devices, in this case, the optical mouse. This file is a critical Windows component and should not be removed. The Microsoft Windows operating system exhibits a graphical user interface and made its first appearance in 1985. It was developed as an easier way for users to operate their machines. All operating systems function as an interface between machine level language and user level software applications.

Moufiltr stands for Mouse filter driver

Moufiltr.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if moufiltr.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for moufiltr drivers in need of updating

Moufiltr.sys file information

The process known as Mouse filter driver or Mouse Filter Driver belongs to software Mouse Filter Driver or Windows (version 2000 DDK driver) by Chic Tech or Windows ( (version 2000 DDK provider).

Description: Moufiltr.sys is not essential for the Windows OS and causes relatively few problems. The moufiltr.sys file is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 62,592 bytes (50% of all occurrences), 9,548 bytes, 8,448 bytes, 7,904 bytes or 9,661 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. There is no detailed description of this service. The file is not a Windows core file. moufiltr.sys appears to be a compressed file. Therefore the technical security rating is 29% dangerous, however you should also read the user reviews.

Recommended: Identify moufiltr.sys related errors

Important: Some malware disguises itself as moufiltr.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the moufiltr.sys 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

nach deinstallation oder fehlen der datei kann man den mauszeiger nicht mehr bewegen.

Summary: Average user rating of moufiltr.sys: based on 2 votes with 1 user comment. One user thinks moufiltr.sys is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous.

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Best practices for resolving moufiltr issues

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

moufiltr.sys [all]