What is MpfSrv.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the MpfSrv.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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MpfSrv.exe file information

Windows Task Manager with MpfSrv
MpfSrv.exe process in Windows Task Manager

The process known as McAfee Personal Firewall Service belongs to software McAfee Personal Firewall by McAfee (

Description: MpfSrv.exe is not essential for the Windows OS and causes relatively few problems. MpfSrv.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 856,864 bytes (42% of all occurrences), 895,696 bytes, 841,256 bytes or 884,360 bytes. 
The program is not visible. The file is a Verisign signed file. The file has a digital signature. MpfSrv.exe is not a Windows system file. MpfSrv.exe is able to hide itself and monitor applications. Therefore the technical security rating is 22% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you still experience problems with MpfSrv.exe, you can uninstall the software McAfee, Inc. using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program).

Recommended: Identify MpfSrv.exe related errors

Important: Some malware camouflages itself as MpfSrv.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the MpfSrv.exe 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

when i end this and related tasks in the task manger window my slow computer seems to run much better.though it sometimes takes several tries.
mpfsrv.exe is a process associated with McAfee Personal Firewall from McAfee

Summary: Average user rating of MpfSrv.exe: based on 1 vote with 2 user comments. One user thinks MpfSrv.exe is essential for Windows or an installed application. One user is not sure about it.

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Best practices for resolving MpfSrv issues

A clean and tidy computer is the key requirement for avoiding problems with MpfSrv. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the MpfSrv.exe process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

MpfSrv.exe [all]