appcmd set config /section:asp /maxRequestEntityAllowed: int

[string]$Account = $cred.UserName
[string]$AccountPW = $cred.Password | ConvertFrom-SecureString

If(!(Get-Module WebAdministation))
{
    import-module WebAdministration
}

$iisAppPoolPath = "IIS:AppPoolsTEST"

$oappPool = New-Item $iisAppPoolPath
$oappPool | Set-ItemProperty -name "enable32BitAppOnWin64" -Value "true"
$oappPool | Set-ItemProperty -Name "managedRuntimeVersion" -Value "v4.0"
$oappPool | Set-ItemProperty -Name "managedPipelineMode" -Value "Classic"
$oappPool | Set-ItemProperty -name "processModel" -value @{userName=$Account;password=$AccountPW;identitytype=3}

Get-Item 'IIS:SitesDefault Web Site'

Set-WebConfigurationProperty /system.webserver/asp/limits -name maxRequestEntityAllowed -value "10485760"