Enable-WindowsStore.ps1

$REGKEY="HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate"
$REGITEM = "DoNotConnectToWindowsUpdateInternetLocations"

function Set-RegistryItem {
    param (
        # Registry key to set
        [Parameter(Mandatory=$true)]
        [string]
        $RegistryKey,

        # Registry item to set
        [Parameter(Mandatory=$true)]
        [string]
        $RegistryItem,

        # Value to Set
        [Parameter(Mandatory=$true)]
        [string]
        $Value,

        # Value type to Set
        [Parameter(Mandatory=$true)]
        [string]
        $Type
    )

    if ($(Get-ItemProperty -Path Registry::$RegistryKey -Name $RegistryItem)) {
        New-ItemProperty -Path Registry::$RegistryKey -Name $RegistryItem -PropertyType $Type -Value $Value -Confirm -Force
    }
}

Set-RegistryItem `
    -RegistryKey "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate" `
    -RegistryItem DoNotConnectToWindowsUpdateInternetLocations `
    -Value 0 `
    -Type DWord

Set-RegistryItem `
    -RegistryKey HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\WindowsStore `
    -RegistryItem AutoDownload `
    -Value 4 `
    -Type DWord

Set-RegistryItem `
    -RegistryKey HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\WindowsStore `
    -RegistryItem RemoveWindowsStore `
    -Value 0 `
    -Type DWord