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 mcshield.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.
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.18.104.22.1689.x86 or VirusScan (Enterprise, ASaP & Retail.) or VSCORE.22.214.171.124.x86 or McAfee VirusScan Enterprise or VSCORE or McAfee.com McShield or VSCORE.126.96.36.199.x86 or VSCORE.188.8.131.525.x86 or VSCORE.184.108.40.206.x86 or VSCORE.220.127.116.113.x86 or McAfee McShield or McAfee Real-time Scanner or Anti-Malware Core or McAfee AntiSpyware Enterprise or VSCORE.18.104.22.1684.x86 or VSCORE.22.214.171.1243.x86 or VSCORE.126.96.36.199.x86
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 8/7/XP are 221,184 bytes (44% of all occurrences), 144,704 bytes and 19 more variants.
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 you should also read the user reviews.
You may want to do the following:
Recommended: Identify mcshield.exe related errors
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.
A clean and tidy computer is the key requirement for avoiding problems with mcshield. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off doing a repair of your installation, or in the case of Windows 8, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.
To help you analyze the mcshield.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.