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I use Microsoft Windows 10. I don't want to use Windows Defender. Therefore I disabled it, but it continues to use my computer's CPU. How can I prevent that?

Here's how I tried to disabled Windows Defender:

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But Windows Defender continues to use my computer's CPU.

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How can I prevent Windows Defender from using my computer's CPU on Microsoft Windows 10?

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I use Microsoft Windows 10. I don't want to use Windows Defender. Therefore I disabled it, but it continues to use my computer's CPU. How can I prevent that?

If you do not want Windows Defender real time scanning, install a good third party Anti Virus that will disable WD Real Time scanning.

About WD using CPU: Properly set up Windows Defender (with no competing AV installed) does not use any appreciable CPU more than 90% of the time. It will do a quick scan on start up and then only scan new incoming files.

3 machines here with only Windows Defender and CPU is under 5% more than 95% of the time on all of them. You need to make sure your computer is properly set up.

Without a good third party AV, Windows Defender will always have real time scanning running, but at very low CPU. Without a third party AV, WD cannot be disabled.

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  • Thanks, so no way to completely turn off Windows Defender?
    – Franck Dernoncourt
    Commented Mar 10, 2022 at 3:05
  • 2
    Not any way to turn it off completely, no.
    – anon
    Commented Mar 10, 2022 at 3:06
  • Yes there is, but you have to remove it>>>>superuser.com/a/1590934/40928
    – Moab
    Commented Mar 10, 2022 at 16:37
  • 2
    Newer Windows updates will normally restart Defender if turned off from all that I have read.
    – anon
    Commented Mar 10, 2022 at 16:40

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