Configuring Windows Defender/Update via Powershell/registry

[mrjayviper]

I have the following powershell script

    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

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:

1. Deleting the entries I made.
2. Configure Windows Defender/Update via gpedit.
3. Export Windows Defender/Update registry setting.
4. Change Windows Defender/Update to an unconfigured state.
5. Close gpedit.
6. Import registry setting from step3.
7. Open gpedit again and check Windows Defender/Update. Both components are still in unconfigured state.

As another test, I also tried:

1. Configuring Windows Defender/Update via gpedit.
2. Delete Windows Defender/Update registry setting.
3. Open gpedit again and check Windows Defender. Both components are still configured.

Any ideas what I could be doing wrong? Thanks