The driver file called apfiltr.sys is referred to as Alps Touch Pad Driver, which is a component of the software Alps Touch Pad Driver for Windows 2000 and Windows XP, sometimes also known as Touch Pad Filter Driver for Windows 2000 and Windows XP, Alps Pointing-device Filter Driver, or Alps Pointing-device Driver for Windows, which are all created by Alps Electric Co., Ltd. This driver file is digitally signed by the same company, Alps Electric Co., Ltd., through Symantec Time Stamping Services Signer - G3, and is recommended to keep it stored on the system and running in the background. Also, apfiltr.sys is a Windows file, which means it is compatible with Microsoft Windows Operating Systems, particularly Windows XP and Windows 2000. What this particular file does is to enable the user to set the different properties and functions related to touch pad control of his or her laptop, or notebook. It includes a user interface to easily access and manage the various options and functionalities of the touchpad.

Most non-system processes that are running can be stopped because they are not involved in running your operating system. apfiltr.sys. is used by Alps Touch Pad Driver for Windows 2000 and Windows XP, If you shut down apfiltr.sys, it will likely start again at a later time either after you restart your computer or after an application start. To stop apfiltr.sys, permanently you need to uninstall the application that runs this process which in this case is Alps Touch Pad Driver for Windows 2000 and Windows XP, from your system.

After uninstalling applications it is a good idea to scan you Windows registry for any left over traces of applications. Registry Reviver by ReviverSoft is a great tool for doing this.

The ReviverSoft experts have not yet reviewed apfiltr.sys

A process usually a part of an installed application such as Alps Touch Pad Driver for Windows 2000 and Windows XP, or your operating system that is responsible for running in functions of that application. Some application require that they have processes running all the time so they can do things such as check for updates or notify you when you get an instant message. Some poorly written applications have many processes that run that may not be required and take up valuable processing power within your computer.

We have not received any complaint about this process having higher than normal impact on PC performance. If you have had bad experiences with it please let us know in a comment below and we will investigate it further.

The first thing you should do if apfiltr.sys. is causing errors on your computer is to run a Windows registry scan with Registry Reviver If you are still seeing errors after this you should uninstall the program that apfiltr.sys, belongs to, in this case Alps Touch Pad Driver for Windows 2000 and Windows XP