Current Exchange CAS user counts

Below you’ll find a slight modification to a post from Mike Pfeiffer on querying Exchange 2010 CAS servers to obtain the current count of OWA and RPC clients.

function Get-CASActiveUsers {
      [Parameter(Position=0, ValueFromPipelineByPropertyName=$true, Mandatory=$true)]

  process {
    $Name | %{
      $RPC = Get-Counter "\MSExchange RpcClientAccess\User Count" -ComputerName $_
      $OWA = Get-Counter "\MSExchange OWA\Current Unique Users" -ComputerName $_
      New-Object PSObject -Property @{
        Server = $_
        "RPC Client Access" = $RPC.CounterSamples[0].CookedValue
        "Outlook Web App" = $OWA.CounterSamples[0].CookedValue

Get-CASActiveUsers CAS-1,CAS-2,CAS-3

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