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Msmpeng.exe stands for Microsoft Malware Protection Engine. It is also known as Antimalware Executable Service and it is the built-in antivirus program for Windows 10 computers. This program runs in the background and scans your computer for threats like malware, viruses, worms, etc. and then quarantines or deletes them. msmpeng.exe consumes too much CPU space because it is actively running in the background while scanning every part of your computer. This, of course, makes msmpeng.exe a resource-intensive program.
Another reason for high CPU consumption of msmpeng.exe is that the program scans its own folder (C:ProgramsWindows Defender). Low hardware resources are also associated with msmpeng.exe consuming too much CPU space. There are two ways to prevent the Windows 10 Malware Protection Service executable from consuming too much CPU space. First, you can prevent Windows Defender from scanning its own folder and turn off real-time protection, and second, you can reschedule Windows Defender scans.
How can I fix MsMpEng.exe high CPU usage?
Stop Windows Defender from scanning your directory
- Type Windows Security in the search bar and click Windows Security in the results.
- Click Virus & Threat Protection.
- Click Manage settings under Virus & threat protection settings.
- Scroll down and click Add or remove exclusions under Exclusions.
- Select Add an exclusion and choose Folder.
- Select the following path:
- C:Windows DefenderProgram Files
- Validate by clicking Exclude this folder.
Limit CPU usage
- Right-click on the Start button and select Task Manager from the list.
- Click the Details tab.
- Right-click msmpeng.exe, select Set Affinity.
- Choose the cores that you allow the particular process to use.
Try a more reliable antivirus
- Since this whole problem is probably caused by Windows Defender, you should consider going a step further and getting a better antivirus.
- Although the built-in defense app in Windows 10 is pretty good, you’ll see a big difference when you’re protected by a full antivirus.
- The solution recommended below uses the latest technologies to identify and remove the latest malware and protects all your devices, including your webcam and router.
- This is one of the best antivirus software out there right now, but you still have 30 days to try it before you buy it, so try it now.
Start your computer in safe mode
windows 10:
- Go to settings.
- Select Update & security, and then click Recovery.
- Under Advanced startup, select Restart now.
- When your PC restarts to the Choose an option screen, select Troubleshoot, then click Advanced Options, then Startup Settings, and click Restart.
- You will then see a list of options. Press F4 to start your PC in safe mode.
windows 11:
- Go to settings.
- Select Update & security, and then click Recovery.
- Under Advanced startup, select Restart now.
- When your PC restarts to the Choose an option screen, select Troubleshoot, then click Advanced Options, then Startup Settings, and click Restart.
- You will then see a list of options. Press F4 to start your PC in safe mode.
Remove adware
- The high CPU usage side effect appears to be a fairly common issue, as seen in multiple results when searching for msmpeng.exe, and may be the cause of potentially dangerous malware. Since this problem can also be caused by adware, you should also consider using specialized software to remove it.
Final words: How to Fix ‘Msmpeng.exe and Reduce High CPU Usage’ Issue
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