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What does the mcshield.exe file do?

The mcshield.exe process is also known as On-Access Scanner service or, as the case may be, McAfee Scanner service and is a part of VSCORE. or, as the case may be, Anti-Malware Core. This software is produced by McAfee (www.mcafee.com) or, as the case may be, Network Associates (nai.com). An obsolete or defective version of mcshield.exe can cause problems for your computer that can range from slowness to error messages such as these:

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What you should know about mcshield.exe On-Access Scanner service

mcshield.exe is not a Windows system file and is known to frequently cause computer problems. The file mcshield.exe is found in a subdirectory of "C:\Program Files" (often C:\Program Files\Network Associates\VirusScan\). Frequently occurring are file sizes such as 144,704 bytes (62% of all these files), 144,960 bytes as well as 15 other variants.
This particular software does not appear as a visible window, but only in Task Manager. It does not come from Microsoft and is not part of the operating system. The file contains a digital signature from Verisign, a subsidiary of Symantec. Verisign thereby confirms this file's authenticity and integrity. The original file has a digital certificate (see its file properties). Mcshield.exe is capable of monitor other applications. For this reason, 24% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

A mcshield.exe file has a 22% certainty of being dangerous if it is found in a subdirectory of "C:\Program Files\Public Documents". In this case, the file size is usually 171,168 bytes (10% of all these files), 1,041,192 bytes as well as 35 other variants. This particular software does not have a visible window, and does not appear on the taskbar. The mcshield file is not part of the Windows operating system. The producer of the file is registered with a certificate authority. This confirms the genuineness of the file. The original file is digitally signed. Check your file. Mcshield.exe is capable of monitor other applications.

If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves mcshield.exe. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.

What do other computer users say about mcshield?

It's On-Access Scanner service, by Network Associates, Inc. (VirusScan Enterprise)
Part of McAfee VirusScan ASaP (corporate virus scanner)
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. (further information...)

Summary: 56 users judge mcshield.exe to be an essential file that should not be touched. 8 users consider it harmless. However, 21 users consider this to be a suspicious process and would like to get rid of it. For this reason, 37 users have already deleted mcshield.exe. source: file.net

How to uninstall VSCORE. or Anti-Malware Core

mcshield.exe On-Access Scanner service fix

To remove On-Access Scanner service from your computer, please follow the manual instructions below or use an automatic uninstaller product.

  1. Click the Windows Start Button. In Windows 8, look for Control Panel.
  2. Click Control Panel.
  3. Click Uninstall a program.
  4. Look for VSCORE. or Anti-Malware Core in the list of available programs.
  5. Click Uninstall.

How to tell if mcshield.exe (On-Access Scanner service) was uninstalled cleanly

After uninstalling, restart your computer. Then start Windows Explorer and see if there is still a folder with the name of the software under C:\Program Files. Be sure to check the Registry as well for remnants of On-Access Scanner service. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for On-Access Scanner service or the name of the producer. Always keep in mind that only a computer professional should ever directly delete entries in the Windows Registry.

What to do if a program does not uninstall

The easiest way to remove any kind of software cleanly and accurately is to use an uninstaller tool. Because the uninstaller automatically creates a backup, there is no risk of anything going wrong.

Last but not least

If Windows not working quite right for you, or if startup is taking a long time, or mcshield.exe is causing problems for you, a good Windows diagnostic tool may very well help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.

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