Developed by Microsoft Corporation, mpfilter.sys is the system filter driver file for Malware protection, a security tool that protects the computer from malicious or potentially unwanted software that may be installed in the system with no adequate user consent. Malware protection works as an anti-spyware program the same function as the Virus Doctor. Malware infection originates from Internet sites that show ads or advertisements that pretend as anti-malware scanners. After scanning the computer, it would state that the computer is infected, making the user download and install the promoted protection program. These online offers are fake, are only advertisements, and have no clue what programs are running on the computer. The MpFilter.sys file is designed as an AntiMalware Engine which resides and is dependent on the fltmgr.sys or Filter Manager Driver similar to other AntiMalware or AntiVirus applications that are currently programmed to be dependent on the Filter Manager Driver.

Most non-system processes that are running can be stopped because they are not involved in running your operating system. mpfilter.sys. is used by Microsoft Malware Protection Center, If you shut down mpfilter.sys, it will likely start again at a later time either after you restart your computer or after an application start. To stop mpfilter.sys, permanently you need to uninstall the application that runs this process which in this case is Microsoft Malware Protection Center, 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 mpfilter.sys

A process usually a part of an installed application such as Microsoft Malware Protection Center, 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 mpfilter.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 mpfilter.sys, belongs to, in this case Microsoft Malware Protection Center