Windows 10: I have MS defender turned off but Antimalware Service Executable still takes up a lot of RAM

Discus and support I have MS defender turned off but Antimalware Service Executable still takes up a lot of RAM in Windows 10 Software and Apps to solve the problem; I use Norton 360 for anti-virus and general protection, I am not looking for any comments about whether that is good, bad or indifferent,My issue is... Discussion in 'Windows 10 Software and Apps' started by Sigma-Sailor, Mar 19, 2025.

  1. I have MS defender turned off but Antimalware Service Executable still takes up a lot of RAM


    I use Norton 360 for anti-virus and general protection, I am not looking for any comments about whether that is good, bad or indifferent,My issue is that I have Norton turned on and MS Defender turned off in Settings/Privacy & security/Windows Security/Virus & threat protection, however Antimalware Service Executable continues to take up a lot of RAM. Can anyone suggest how to disable it?

    :)
     
    Sigma-Sailor, Mar 19, 2025
    #1

  2. Antimalware Service Executable hogging up a lot of RAM.

    Hi,



    Thank you for writing to Microsoft Community Forums.



    I understand that you are facing high RAM usage issue due to Antimalware Service Executable.



    It is one of the background-running services in Windows Defender. Antimalware Service Executable is running to scan the malware and spyware when you access them. It will detect if there’s anything harmful on your PC Aside from that, it also takes a
    background scan of your system for any viruses or worms. Its scanning relies heavily on your computer’s CPU, that’s why you find it’s eating the CPU usage on your Windows 10.



    To get this sorted, I suggest to follow the steps below:



    Method 1:



    1. Press Windows key + R, to open
      Run
      dialog box.
    2. Type taskschd.msc and click on OK.
    1. Now expand Task Scheduler Library >
      Microsoft > Windows
    2. Select Windows Defender and on the right hand pane double-click on
      Windows Defender Scheduled Scan.
    3. Under General tab, uncheck the box next to
      Run with highest privileges.
    4. Select Conditions tab, uncheck all the items and click on
      OK.


    Method 2:



    Add Antimalware Service Executable to Windows Defender exclusion list.



    1. Press Windows + I keys together to open
      Settings.
    2. Click on Update &
      Security and select Windows Security.
    3. Now click on Open Windows
      Security
      .
    4. Click on Virus & threat protection
    5. Under Virus & threat protection settings click on
      Manage settings.
    6. Scroll down and look for Exclusions and select
      Add or remove exclusions.
    7. Click on Add an exclusion and select
      Process.
    8. Type MsMpEng.exe and click on
      Add
      .


    Restart the PC and check if the RAM usage is high.



    Let us know how it goes.



    Regards,

    Prakhar Khare

    Microsoft Community – Moderator
     
    Prakhar_Khare, Mar 19, 2025
    #2
  3. Antimalware Service Executable problem

    I was having the same issue like for weeks on my HP Probook Ci5 12GB, the Antimalware Service Executable process was eating up massive CPU, DISK and RAM. After all the hard time I got searching the solution I finally landed on

    this
    article which helped me.
     
    Maarij_2016, Mar 19, 2025
    #3
  4. I have MS defender turned off but Antimalware Service Executable still takes up a lot of RAM

    Antimalware Service Executable problem

    I am still having the problem even with the latest prerelease build. The Antimalware Service Executable process is often running and taking a lot of CPU, disk and memory. The same The Antimalware Service Executable -> Windows Defender Service ...
    Too often the PC (an I7 one, 8 GB EliteBook HP) is stuck and even the response of a keyboard entry is very slow!!

    Any suggestions?
     
    Enzo Contini, Mar 19, 2025
    #4
Thema:

I have MS defender turned off but Antimalware Service Executable still takes up a lot of RAM

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