What is mfeann.exe?

The genuine mfeann.exe file is a software component of McAfee VirusScan Enterprise by McAfee LLC.
"Mfeann.exe" is the "Announcer" module for McAfee VirusScan for Enterprise (VSE), responsible for event creation and logging. Other McAfee for Enterprise products, (e.g., AntiSpyware for Enterprise), use it also. Consumer PC's should not have it. For VSE it installs in "C:\Program Files\McAfee\VirusScan Enterprise\mfeann.exe". McAfee Enterprise products are designed to be managed remotely by ePolicy Orchestrator but VSE can be installed for standalone use, where the "mfeann.exe" logs record locally, not going to an ePO server. To uninstall VSE consult a network administrator or consult McAfee's corporate Knowledge Center. Founded in 1987 by John McAfee, (who resigned in 1994), and briefly known as "Intel Security" until Intel returned it to standalone status in 2017 while keeping 49% ownership, McAfee LLC is now the world's largest dedicated security technology provider.

MFEAnn stands for McAfee For Enterprise Announcer

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 mfeann.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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Mfeann.exe file information

Windows Task Manager with mfeann
Mfeann.exe process in Windows Task Manager

The process known as VSCore Announcer belongs to software McAfee VirusScan Enterprise or McAfee AntiSpyware Enterprise by McAfee (

Description: Mfeann.exe is not essential for the Windows OS and causes relatively few problems. Mfeann.exe is located in a subfolder of "C:\Program Files (x86)"—mostly C:\Program Files (x86)\McAfee\VirusScan Enterprise\. Known file sizes on Windows 10/8/7/XP are 27,960 bytes (37% of all occurrences), 33,944 bytes, 37,960 bytes, 33,648 bytes or 26,672 bytes. 
The program is not visible. The mfeann.exe file is a Verisign signed file. The file has a digital signature. The file is not a Windows core file. Therefore the technical security rating is 22% dangerous; however you should also read the user reviews.

Uninstalling this variant: If you experience any issues with installation of mfeann.exe, you can also

Recommended: Identify mfeann.exe related errors

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

It is normal that use 50% of your CPU?
  Jose Luis  
mfeann.exe is a process referred to as "The Announcer". It is a service spawned by McShield.exe, and is responsible for performing all logging activities for the product as well as alerting functions - that is, generating events.
this might be a virus
McAfee VirusScan Enterprise, This component is the 'announcer' which displays the On Access Scan detection dialog. This is new to VirusScan Enterprise 8.7. In previous VirusScan versions, this was a part of mcshield.exe.
  Arno Krause   (further information)
mfeann.exe is a process from Netshield by McAfee and part of McAfee security.
  Dan   (further information)

Rating chart

Summary: Average user rating of mfeann.exe: based on 6 votes with 5 user comments. 3 users think mfeann.exe is essential for Windows or an installed application. 2 users think it's probably harmless. One user thinks it's neither essential nor dangerous.

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Best practices for resolving mfeann issues

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

mfeann.exe [all]