What is Mpfp?

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

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

Mpfp.sys file information

The process known as McAfee Personal Firewall Plus Driver or MPFP belongs to software McAfee Personal Firewall Plus by McAfee (

Description: Mpfp.sys is not essential for Windows and will often cause problems. Mpfp.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 113,952 bytes (28% of all occurrences), 120,136 bytes, 109,608 bytes, 130,424 bytes or 125,728 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. It is a Verisign signed file. The file is certified by a trustworthy company. There is no detailed description of this service. Mpfp.sys is not a Windows core file. Mpfp.sys appears to be a compressed file. Therefore the technical security rating is 14% dangerous, however you should also read the user reviews.

Recommended: Identify Mpfp.sys related errors

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

I was unable to upgrade Windows Vista to Win 7 because McAfee Personal Firewall was interferring. McAfee's removal program had no effect, but eventually I found that deleting mpfp.sys solved the problem

Summary: Average user rating of Mpfp.sys: based on 2 votes with 1 user comment. One user thinks Mpfp.sys is essential for Windows or an installed application. One user suspects danger.

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Best practices for resolving Mpfp issues

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

Mpfp.sys [all]