What is mfehidk?

The genuine mfehidk.sys file is a software component of SYSCORE by McAfee LLC.
"Mfehidk.sys" is the Host Intrusion Detection Link of SYSCORE, common to all McAfee For Enterprise cybersecurity products, (which ePolicy Orchestrator can manage remotely), including VirusScan Enterprise. It installs in "C:\Windows\System32\drivers". It is a "kernel mode" and not a "user mode" driver. When multiple products using SYSCORE are installed, this driver's version is the installed SYSCORE version level. The Validation Trust Protection Service (mfevtps.exe), without which no McAfee process loads or runs, to prevent intrusion by falsely-named malware, depends upon this driver. Under Win7 or earlier it is the first SYSCORE driver to start when Windows does; under Win8 and later, the Microsoft ELAM (Early Launch Anti-Malware) Framework first starts "mfeelamk.sys". Consult network administration before trying to stop or uninstall SYSCORE software. Certain key McAfee processes automatically restart because malware tries to kill them. McAfee LLC is the world's largest dedicated security technology company.

MFEHIDk stands for McAfee For Enterprise Host Intrusion Detection Link Driver

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

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

Mfehidk.sys file information

The process known as McAfee Link Driver or McAfee Inc. mfehidk or Host Intrusion Detection Link Driver belongs to software SYSCORE or McAfee Inc. mfehidk or SYSCORE. by McAfee (

Description: Mfehidk.sys is not essential for Windows and will often cause problems. The mfehidk.sys file is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 464,304 bytes (33% of all occurrences), 214,664 bytes or 214,024 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. Mfehidk.sys is certified by a trustworthy company. The service has no detailed description. It is not a Windows core file. It is a trustworthy file from Microsoft. mfehidk.sys appears to be a compressed file. Therefore the technical security rating is 6% dangerous, but you should also take into account the user reviews.

Recommended: Identify mfehidk.sys related errors

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

my system xp home reboots on safe to remove usb device until i removed this file
  Dave Maslen  
Part of the McAfee product suite - a filter driver used for virus detection
  Ben Valcour  
"MFEHIDK.SYS" is the "Host Intrusion Detection Link Driver". It is "owned" by McAfee, and is to be found in " windows \System32\Drivers"
mcafee found mine to be malware.
  Jim Michaels  
Installed by McAfee, a system hog paid antivirus. Use Revo to get rid of McAfee junkware, install AVG antivirus, delete mfdhdik.sys when it detects it
  Random Arrow  
Appeared after installing McAfee.Dissapeared after uninstalling McAfee using their special tool
  Brian C  
not a lot,but I have a Problem with causing errors also start up after login problems and drivers missing fromn Mcafee
  Geoff wooding  
AVG detected it being hidden using rootkit techniques.
This is part of McAfee antivirus, and will show up as an issue when any other AV is used (AVG etc). Best to uninstall McAfee, and replace.
it make my system crash... blue screen

Rating chart

Summary: Average user rating of mfehidk.sys: based on 13 votes with 10 user comments. 3 users think mfehidk.sys is essential for Windows or an installed application. 3 users think it's probably harmless. 3 users think it's neither essential nor dangerous. One user suspects danger. 3 users think mfehidk.sys is dangerous and recommend removing it. 4 users don't grade mfehidk.sys ("not sure about it").

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Best practices for resolving mfehidk issues

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

mfehidk.sys [all]