Windows 10: Configuring Windows Defender/Update via Powershell/registry:

Discus and support Configuring Windows Defender/Update via Powershell/registry: in AntiVirus, Firewalls and System Security to solve the problem; I have the following powershell script Code: Set-ItemProperty "Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender" -Name... Discussion in 'AntiVirus, Firewalls and System Security' started by mrjayviper, Dec 17, 2017.

  1. MRJAYVIPER
    mrjayviper Win User

    Configuring Windows Defender/Update via Powershell/registry:


    I have the following powershell script
    Code: Set-ItemProperty "Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender" -Name DisableAntiSpyware -Value 0x00000001 New-Item -Path "Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows" -name WindowsUpdate New-Item -Path "Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate"-Name AU Set-ItemProperty "Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU" -Name NoAutoUpdate -Value 0x00000000 Set-ItemProperty "Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU" -Name AUOptions -Value 0x00000002[/quote] Basically, it turns off Windows Defender and stops Microsoft from auto-updating my computer. I restarted by computer and when I checked the Windows Defender/Update settings via gpedit, the changes I made via registry are not reflected.
    As a test, I tried:
    • Deleting the entries I made.
    • Configure Windows Defender/Update via gpedit.
    • Export Windows Defender/Update registry setting.
    • Change Windows Defender/Update to an unconfigured state.
    • Close gpedit.
    • Import registry setting from step3.
    • Open gpedit again and check Windows Defender/Update. Both components are still in unconfigured state.
    As another test, I also tried:
    • Configuring Windows Defender/Update via gpedit.
    • Delete Windows Defender/Update registry setting.
    • Open gpedit again and check Windows Defender. Both components are still configured.
    Any ideas what I could be doing wrong? Thanks

    :)
     
    mrjayviper, Dec 17, 2017
    #1
  2. GLOBALR
    globalr Win User

    Unable to Install Windows Defender - KB2267602 (Definition 1.237.1219.0): Failed [HYPER-V Core 2016]

    PCR,

    Can you post the answer is the below, and I will mark it as the answer?

    ************

    Via powershell run the un-install command ->

    Uninstall-WindowsFeature -Name Windows-Defender

    -> Reboot

    Via powershell run the install command ->

    Install-WindowsFeature -Name Windows-Defender

    -> Reboot

    -> Run Windows update

    ************
     
    globalr, Dec 17, 2017
    #2
  3. GREGINMICH
    GreginMich Win User
    Windows Defender in Windows 10?

    I've never used the Group Policy setting for this, so I can't say whether there's any difference in the implementation. This article discusses both of the registry locations:

    http://www.winhelponline.com/blog/defender-enable-pua-pup-adware-protection/

    But the PowerShell Set-MpPreference cmdlet is now the de facto advanced configuration interface for Windows Defender on the Home edition of Windows 10; and it also greatly simplifies the configuration of Windows Defender on systems that have the Group
    Policy Editor:

    Block Potentially Unwanted Applications with Windows Defender AV

    Set-MpPreference (defender)

    So this should probably be considered the standard interface for enabling PUA Protection. We generally only use Group Policy to set parameters that can’t be set with PowerShell, like DisableRoutinelyTakingAction:

    stop windows defender from automatically removing "threats"
     
    GreginMich, Dec 17, 2017
    #3
Thema:

Configuring Windows Defender/Update via Powershell/registry:

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