winutil/functions/public/Invoke-WPFUpdatesdisable.ps1

function Invoke-WPFUpdatesdisable {
    <#

    .SYNOPSIS
        Disables Windows Update

    .NOTES
        Disabling Windows Update is not recommended. This is only for advanced users who know what they are doing.

    #>
    $ErrorActionPreference = 'SilentlyContinue'

    Write-Host "Configuring registry settings..." -ForegroundColor Yellow
    New-Item -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU" -Force

    Set-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU" -Name "NoAutoUpdate" -Type DWord -Value 1
    Set-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU" -Name "AUOptions" -Type DWord -Value 1

    New-Item -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config" -Force
    Set-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config" -Name "DODownloadMode" -Type DWord -Value 0

    Write-Host "Disabled BITS Service"
    Set-Service -Name BITS -StartupType Disabled

    Write-Host "Disabled wuauserv Service"
    Set-Service -Name wuauserv -StartupType Disabled

    Write-Host "Disabled UsoSvc Service"
    Set-Service -Name UsoSvc -StartupType Disabled

    Write-Host "Disabled WaaSMedicSvc Service"
    Set-Service -Name WaaSMedicSvc -StartupType Disabled

    Remove-Item "C:\Windows\SoftwareDistribution\*" -Recurse -Force
    Write-Host "Cleared SoftwareDistribution folder"

    Write-Host "Disabling update related scheduled tasks..." -ForegroundColor Yellow

    $Tasks =
        '\Microsoft\Windows\InstallService\*',
        '\Microsoft\Windows\UpdateOrchestrator\*',
        '\Microsoft\Windows\UpdateAssistant\*',
        '\Microsoft\Windows\WaaSMedic\*',
        '\Microsoft\Windows\WindowsUpdate\*',
        '\Microsoft\WindowsUpdate\*'

    foreach ($Task in $Tasks) {
        Get-ScheduledTask -TaskPath $Task | Disable-ScheduledTask -ErrorAction SilentlyContinue
    }

    Write-Host "=================================" -ForegroundColor Green
    Write-Host "---   Updates Are Disabled    ---" -ForegroundColor Green
    Write-Host "=================================" -ForegroundColor Green

    Write-Host "Note: You must restart your system in order for all changes to take effect." -ForegroundColor Yellow
}