How to remove an MpFirewall error

MpFirewall.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 OS, hardware etc.
The free file information forum can help you determine if MpFirewall.sys belonging to the Windows system or an application you can trust.

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

MpFirewall.sys file information

The process known as McAfee Personal Firewall Driver or McAfee Personal Firewall Plus (version 6.1, 5.0) or MPFIREWL belongs to software McAfee Personal Firewall or McAfee Personal Firewall Plus or MPFIREWL by McAfee (www.mcafee.com) or McAfee Security (www.mcafee.com).

Description: MpFirewall.sys is located in the folder C:\Windows\System32\drivers. Known file sizes on Windows 7/XP are 80,640 bytes (63% of all occurrences), 67,584 bytes and 5 more variants.
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. It is not a Windows core file. MpFirewall.sys seems to be a compressed file. Therefore the technical security rating is 38% dangerous, however also read the users reviews.
You might want to uninstall McAfee Personal Firewall Plus software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 7/Vista).

Recommended: Identify MpFirewall.sys related errors

Important: Some malware camouflages itself as MpFirewall.sys, particularly when located in the c:\windows or c:\windows\system32 folder. Therefore, you should check the MpFirewall.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.

Score

User Comments

It caused the blue screen of death to come up! address b2ec3a8f, base b2ec1000, datestamp 409a669f
Deborah Vernon

BSoD on Windows XP (Media Center). Brand new PC, has happened 3 times in 2 days... always when logging on.
Lorenzo Vicente

Permanente Systemabstürze: z.B. Adresse ABC9F395
S. Bachmann

This is the main driver for the firewall
Greg Finzer

Has caused blue screen of death twice in first 2 days of owning new pc

It caused BSoD to appear on boot-up (Windows XP) with message (WDM DRIVER ERROR 21F
Roger

McAfee's firewall, Causes Blue Screen of Death (BSoD) on my friend's PC... caused the BSoD's as soon as she got the PC (from Dell), came ready installed... tried to reinstall and update McAfee, didnt help... still got random BSODs every few days... ended up deleteing it
Dawgg

Will BSoD Upgrade to Vista Business
John K (further information)

Causes BSOD's especially when installations occur (windows upgrades, msoffice etc). I disabled the services whilst I installed but if I had the choice I would uninstall McAfee and use something that is freeware and less bloatware etc.
David

Kept getting blue screen death. Uninstalled McAfee firewall & now my pc is fine
Andy Joseph

Caused BSOD while doing Microsoft Update on brand new dell laptop.
Chris Darrow

Summary: Average user rating of MpFirewall.sys: based on 10 votes with 11 reviews.

2 users think MpFirewall.sys is essential for Windows or an installed application. 1 user think it's neither essential nor dangerous. 7 users suspect danger. 1 user doesn't grade MpFirewall.sys ("not sure about it").

MpFirewall scanner

Security Task Manager shows all running Windows tasks including embedded hidden functions (e.g. keyboard or browser monitoring, autostart entry). A unique security risk rating indicates the likelihood of the process being potential spyware, malware, keylogger or a Trojan.

MalwareBytes detects and removes sleeping spyware, adware, trojans, keyloggers, malware and tracking threats from your hard disk. Ideal supplement to Security Task Manager.

SpeedUpMyPC scans, cleans, repairs and optimizes your computer.

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