$ErrorActionPreference = 'Stop'

$isOS64   = [Environment]::Is64BitOperatingSystem
$isProc64 = [Environment]::Is64BitProcess

$KeyPS  = 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\WinHttp'
$KeyRel = 'SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\WinHttp'
$Name   = 'DisableWpad'

if ($isOS64 -and -not $isProc64) {
    # 32-bit PowerShell on 64-bit OS -> write to 64-bit registry view
    $bk = [Microsoft.Win32.RegistryKey]::OpenBaseKey(
        [Microsoft.Win32.RegistryHive]::LocalMachine,
        [Microsoft.Win32.RegistryView]::Registry64
    )
    $k = $bk.CreateSubKey($KeyRel)
    $k.SetValue($Name, 1, [Microsoft.Win32.RegistryValueKind]::DWord)
    $k.Close()
} else {
    if (-not (Test-Path -LiteralPath $KeyPS)) { New-Item -Path $KeyPS -Force | Out-Null }
    New-ItemProperty -Path $KeyPS -Name $Name -Value 1 -PropertyType DWord -Force | Out-Null
}