Top 3 fixes for MsMpEng.exe eating up too much CPU in Windows 10 problem

By Enya Zhang  Common Errors  high CPU   1 Comment

MsMpEng.exe, aka antimalware service executable, is a native antivirus, anti-malware & spyware program in Windows 10. While running in background, it scans for any suspicious virus and takes active steps to prevent them from further infecting our computer.

Note that MsMpEng.exe can also be a resource-hungry program and that’s why MsMpEng.exe has been eating up so much of your CPU usage, causing computer slowdown, lagging and even 100% Disk Usage issues.

But don’t worry, here in this article, we’ll provide 3 effective workarounds for you to put this nasty problem to bed in no time…

Try these fixes

You may not have to try all these fixes; just work your way down the list until the problem goes away.

  1. Prevent Windows Defender from scanning its own folder
  2. Disable Real-Time Protection and reschedule your Windows Defender
  3. Use the Local Group Policy Editor to turn off Windows Defender
  4. Bonus tip: Update your device drivers

Fix 1: Prevent Windows Defender from scanning its own folder

1) On your keyboard, press the Windows logo key   , then copy & paste Virus & threat protection into the box and click Virus & threat protection.

2) Click Virus & threat protection settings.

3) Scroll down to the bottom and click Add or remove exclusions.

4) Click Add an exclusion > Folder.

5) Copy & paste C:\Program Files\Windows Defender into the box and click Select Folder.

6) See if MsMpEng.exe is still hogging your CPU usage. If the problem persists, move on to Fix 2.

Fix 2: Disable Real-Time Protection and reschedule your Windows Defender

1) On your keyboard, press the Windows logo key and R at the same time, then copy & paste taskschd.msc into the box and press Enter.

2) Locate and double-click on Task Schedule LibraryMicrosoft > Windows.

3) Scroll down to the bottom, double-click on Windows Defender, then right-click on Windows Defender Scheduled Scan and click Properties.

4) In the General tab, un-check the box before Run with highest privileges.

5) Click the Conditions tab, make sure the boxes in this window are unchecked.

5) Click the Triggers tab > New….

6) Schedule your own Windows Defender scan. Carefully choose the frequency, scan time and date at your own convenience and click OK

7) Restart your computer. Hopefully this time your MsMpEng.exe won’t be hogging too much of your CPU usage.

Fix 3: Use the Local Group Policy Editor to turn off Windows Defender

Note that Fix 3 is about to turn off your Windows Defender program which might leave your computer at the mercy of virus and malware attacks. Please proceed with caution.

1) On your keyboard, press the Windows logo key and R at the same time, then copy & paste gpedit.msc into the box and press Enter.

2) Locate and double-click on Computer Configuration > Administrative Templates > Windows Components.

3) Locate and double-click on Windows Defender Antivirus (aka. Windows Defender, same as below). Then double-click on Turn off Windows Defender Antivirus.

4) Choose the Enabled option, and click Apply > OK.

5) Restart your computer and see if your computer runs normally now.

Bonus tip: Update your device drivers

If after trying all the fixes above, your computer is still grinding to a crawl, then chances are high that you have corrupted/mismatched/missing/outdated drivers on your computer.

Problem drivers may not pose too much of a problem in the early stages, but if mishandled, they may cause much more serious problems, like high-pitch noise, blue screens of death, snowy screens etc. So it’s highly recommended you update your device drivers to keep your computer in peak health.

There’re two ways you can update your device drivers — manually or automatically:

Update your drivers manually – You can update your device drivers manually by going to the manufacturer’s website, and searching for the most recent correct driver for the exact device. Be sure to choose only drivers that are compatible with your variant of Windows system versions.

Update your drivers automatically  – If you don’t have the time, patience or computer skills to update your drivers manually, you can, instead, do it automatically with Driver Easy You don’t need to know exactly what system your computer is running, you don’t need to risk downloading and installing the wrong driver, and you don’t need to worry about making a mistake when installing.

You can update your drivers automatically with either the FREE or the Pro version of Driver Easy. But with the Pro version it takes just 2 clicks (and you get full support and a 30-day money back guarantee):

1) Download and install Driver Easy.

2) Run Driver Easy and click the Scan Now button. Driver Easy will then scan your computer and detect any problem drivers.  

3) You can upgrade to the Pro version and click Update All to automatically download and install the correct version of ALL the drivers that are missing or out of date on your system.

You can also click Update to do it for free if you like, but it’s partly manual.

4) Restart your computer and hopefully everything goes off without a hitch on your computer this time.

That’s it – top 3 fixes for your MsMpEng.exe-eating-up-too-much-CPU-in-Windows 10 problem. Hope this helps and feel free to comment below if you have any further questions. 🙂

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