Windows 10: Windows Defender high network usage

Discus and support Windows Defender high network usage in AntiVirus, Firewalls and System Security to solve the problem; Hello, I observed Windows Defender (MsMpEng.exe) is using lot of network resources for long time. I can't stop the service or kill the process even... Discussion in 'AntiVirus, Firewalls and System Security' started by willi.weikum, Oct 20, 2019.

  1. Windows Defender high network usage


    Hello,


    I observed Windows Defender (MsMpEng.exe) is using lot of network resources for long time.

    I can't stop the service or kill the process even with admin right on elevated PowerShell..


    Interestingly I don't see the process in the list of netstat -ab - looks Microsoft hides it.. I have no idea what network connections it is running.. Do they send my Data to Microsoft?


    Windows Defender high network usage a3fea38d-b863-4d93-baab-d86e079f6a9f?upload=true.jpg


    Does anybody know what happens there an how to troubleshoot and prevent it?

    :)
     
    willi.weikum, Oct 20, 2019
    #1
  2. AUTiger1 Win User

    High Disk Usage


    Hi all, I'm struggling with finding things to fix my high disk usage. I've spent many months searching the internet and doing all the listed suggestions like disabling SuperFetch, Windows Defender, Updating drivers, ect. and still I'm stuck with a high disk usage. Here's a screen shot I took immediately following a restart and opening up to a new Firefox window.


    Windows Defender high network usage [​IMG]


    I have noticed Service Host: Local System takes up quite a bit of disk usage and that if I close it and let it open back up all by itself then it immediately makes my disk usage drop into a much more manageable 40-60% usage range. But eventually after a while it maxes out again and I have to close it out again. It's an annoying step just to be able to use my computer.

    Also, I have noticed that after working with my mom's computer today, that her disk usage when no programs are running is only like 5%. Makes me wonder why my computer can have no programs running but my disk usage never drops below 30% and sits in the 40-60% range with spikes up over 75%.

    I honestly don't know enough about computers to do much more than I already have without causing major issues. BTW, just a couple weeks ago I had to do a Windows reinstall, not a complete reinstall, just the basic reinstall they allow you to do on Windows 10 where you still keep all your personal files. Ever since that a lot of times when I try to open a process like Run or Task Manager I'll get an error message that it can't open and then I do it again and it will open the second time.

    Here's a screenshot of my computer information so you can see what I'm working with here.

    Windows Defender high network usage [​IMG]
     
    AUTiger1, Oct 20, 2019
    #2
  3. Clark Ari Win User
    Network Usage in Windows 10

    Hi,

    One of the possible reasons why this issue occurs is when your computer is not set as metered connection. A metered network is being set when you have limited data plan and want to control your data usage. To know more about your high data usage
    issue in Windows 10, we just have a few questions:

    • What is the make and model of your device?
    • Which build and version of Windows 10 are you running? To check it, click
      Start
      , type About your PC, then press
      Enter.
    • Are you using a wired or a wireless connection?

    In the meantime, we suggest that you set your device to a metered connection. To do this, kindly follow the steps provided on this

    link
    .

    We're looking forward to your response.
     
    Clark Ari, Oct 20, 2019
    #3
  4. Windows Defender high network usage

    Windows Defender - Firewall and Network Protection

    Hi,

    We suggest that you try restarting Windows Defender service and check if issue is resolved. Follow the steps below:

    • Press Windows key + X key and type services.msc,
      hit enter.
    • Search Windows Defender Service.:1)Windows Defender Service ; 2)
      Windows Defender Network.
    • Right click on each and press Start.
    • Restart your computer and check if issue persist.

    Let us know if you need further assistance.
     
    Reymichael Ros, Oct 20, 2019
    #4
Thema:

Windows Defender high network usage

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