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What does the MsMpEng.exe file do?

The MsMpEng.exe process is also known as Antimalware Service Executable or, as the case may be, Microsoft Antimalware and is a part of Microsoft Malware Protection or, as the case may be, Windows Defender. This software is produced by Microsoft (www.microsoft.com). An obsolete or defective version of MsMpEng.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 MsMpEng.exe Antimalware service Executable

MsMpEng.exe is not part of Windows, but it is important nonetheless. MsMpEng.exe is found in a subdirectory of "C:\Program Files". Frequently occurring are file sizes such as 13,592 bytes (17% of all these files), 11,736 bytes as well as 33 other variants.
The application does not appear as a visible window, but only in Task Manager. The producer of the file is registered with a certificate authority. This confirms the genuineness of the file. The MsMpEng file is not part of the Windows operating system. You may uninstall the related program using Windows Control Panel. For this reason, 20% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

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 MsMpEng.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 MsMpEng?

Safe, STM should update
Tom
MS spyware program, not dangerous, but useless
Terry
Windows defender file
Anthony Colley
Windows Defender
It is microsoft windows defender, free to download to
Mike

Summary: 94 users judge MsMpEng.exe to be an essential file that should not be touched. 9 users consider it harmless. However, 9 users consider this to be a suspicious process and would like to get rid of it. For this reason, 20 users have already deleted MsMpEng.exe. source: file.net

How to uninstall Microsoft Malware Protection or Windows Defender

MsMpEng.exe Antimalware service Executable fix

To remove Antimalware service Executable 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 Microsoft Malware Protection or Windows Defender in the list of available programs.
  5. Click Uninstall.

How to tell if MsMpEng.exe (Antimalware service Executable) 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 Antimalware service Executable. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for Antimalware service Executable 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 MsMpEng.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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