#This works with a Classic Azure Cloud Service Web Role
$SubsciptionName = "<name>"
$CloudServiceName = "<web-role-name>"
Add-AzureAccount
Select-AzureSubscription -Name $SubscriptionName
Get-AzureRole -ServiceName $CloudServiceName

$username = "<username>"
$password = "<other-options-can-be-used>"
$securepassword = ConvertTo-SecureString -String $password -AsPlainText -Force
$expiry = $(Get-Date).AddDays(1)
$rdpcredential = New-Object System.Management.Automation.PSCredential $username,$securepassword
Set-AzureServiceRemoteDesktopExtension -ServiceName $CloudServiceName -Credential $rdpcredential -Expiration $expiry