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Is mcshield.exe safe?

Mcshield.exe is a executable file (a program) within Windows. The filename extension .exe denotes an executable file. You should only run executable files from publishers you trust, because executable files can potentially change your computer settings or harm your computer. The free file information forum can help you determine if mcshield.exe is a virus, trojan, spyware, or adware that you can remove, or a file belonging to a Windows system or to an application you can trust.

Mcshield.exe file information

The process known as On-Access Scanner service or NT On-Access Scanner service or McAfee On-Access Scanner service

belongs to software VirusScan or McAfee On-Access Scanner or VSCORE. or VirusScan (Enterprise, ASaP & Retail.) or VSCORE. or McAfee VirusScan Enterprise or VSCORE or McAfee.com McShield or VSCORE. or VSCORE. or VSCORE. or VSCORE. or McAfee McShield or McAfee Real-time Scanner or Anti-Malware Core or McAfee AntiSpyware Enterprise or VSCORE. or VSCORE. or VSCORE.

by McAfee (www.mcafee.com) or Network Associates (nai.com).

Description: Mcshield.exe is not essential for Windows and will often cause problems. The file mcshield.exe is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of the "My Files" folder (common is C:\Program Files\Network Associates\VirusScan\). Known file sizes on Windows 7/XP are 221,184 bytes (44% of all occurrences), 144,704 bytes and 19 more variants. http://www.file.net/process/mcshield.exe.html 
The program has no visible window. It is not a Windows core file. Mcshield.exe is able to monitor applications and hide itself. Therefore the technical security rating is 34% dangerous, however also read the users reviews.
You may want to do the following:

  • go to the support area of the Mcafee website
  • see if there is a newer version
  • uninstall the associated program (Start > Control Panel > Add/Remove programs > McAfee VirusScan On-line)

Recommended: Identify mcshield.exe related errors

If mcshield.exe is located in a subfolder of "C:\Program Files\Common Files", the security rating is 27% dangerous. The file size is 171,168 bytes (11% of all occurrences), 166,288 bytes and 30 more variants. The program has no visible window. The file is not a Windows system file. The mcshield.exe file is digitally signed. Mcshield.exe is a Verisign signed file. Mcshield.exe is able to monitor applications and hide itself.

If mcshield.exe is located in a subfolder of C:\Windows, the security rating is 80% dangerous. The file size is 15,713 bytes. There is no information about the author of the file. Mcshield.exe is located in the Windows folder, but it is not a Windows core file. The program has no visible window. The software starts when Windows starts (see Registry key: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run). Mcshield.exe is not a Windows core file. Mcshield.exe is able to record inputs.

Important: Some malware also uses the file name mcshield.exe, for example Trojan.Win32.Scar.pdy (detected by Kaspersky), and Downloader (detected by Symantec). Therefore, you should check the mcshield.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

Obviously a non-malignant programme but its cpu usage is way too high to be acceptable. It uses up about 50% of cpu and therefore requires constant cooling causing the cooling fan on my laptop to drain the battery life
I work at a public college, and every computer here has McAfee Viruscan Enterprise on its computers. McAfee is set to do a virus scan every computer on Thursday. Since even the fastest computers get bogged down during the scan, you could imagine what it was doing to my piece-of-crap Dell the school gave me to use. It was nearly impossible to do any work on my computer during the scans, so I complained to the IT department. They suggested I use McProfiler to monitor what processes may be responsible for the slowdown. Through task manager, I had already identified the processes that popped during the scan: mcshield.exe and scan32.exe. I wasn't sure which one was causing the slowdown, so I was hoping that McProfiler would provide an answer. It did, but not as intended. Shortly after I set McProfiler to run, I noticed that McProfiler had shut down scan32.exe and my computer became noticeably faster and less busy. The mcshield.exe process is still running in the background and uses memory, but it's not slowing down my computer at all. It may be that scan32.exe and mcshield.exe have to run together to effectively scan the computer. And since McProfiler is a McAfee product, it may be shutting down scan32.exe in an effort to not out McAfee Viruscan as the culprit behind slowing down the computer. But I honestly don't care. I just want to be able to work on my computer without being bogged down by annoying antivirus scans.
It is annoying when CPU usage reaches 100%. I found that if I try to 'End process' with Task Manager, it can't be stopped, but the CPU usage drops to below 30%, which is more acceptable, though not ideal.
Runs on my work notebook. Hate it, annoying, user-unfriendly, thinks it knows what's needed far more than the user.
it hangs/freezes my laptop windows 7 64 bit every 10day. I uninstalled and replaced with MSE. My laptop works perfect now.
On Windows 8, this program is nearly impossible to uninstall, and sucks down your CPU. Absolutely useless. The best it has done is stop one trojan from entering my computer. Any program can do this. Do not get this.
McAffee causes all kinds of problems. Ask your resident tech guru what free antivirus program they recommend and uninstall this garbage. I recommend spybot search and destroy and avast antivirus.
slowing down pc
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of mcshield.exe: based on 163 votes with 9 reviews.
56 users think mcshield.exe is essential for Windows or an installed application. 9 users think it's probably harmless. 38 users think it's neither essential nor dangerous. 22 users suspect danger. 38 users think mcshield.exe is dangerous and recommend removing it. 25 users don't grade mcshield.exe ("not sure about it").

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Mcshield 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 Anti-Malware 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.

Other processes

mcshield.exe [all]