Try Catch not working for Get-WMIOjbect Win32_LogicalDisk - try-catch

Question

I have a script that checks on disk size and percentage used for my servers. When everything is correct, it works. However, it seems like the Try-catch fails to catch any errors. The script merely writes a message to the console, then quits the script. Here is some sample code:
$Error.Clear()
try
{
$wkDisk = Get-WmiObject Win32_LogicalDisk `
-ComputerName "Apathy.computrolllc.com" `
-filter "DeviceID = 'C:'" `
-Credential $wkLogCreds
}
catch
{
$Msg = "Error retrieving disk info`n"
$Msg += $_.Exception.Message
Write-Host $Msg
$Error.Clear()
$wkDisk = $Null
}
if ($Null -ne $wkDisk)
{
$wkSizeGB = $wkDisk.Size / 1GB
$wkFreeGB = $wkDisk.FreeSpace / 1GB
$wkFreePct = $wkDisk.FreeSpace / $wkDisk.size
$wkFreePct *= 100
$wkFreePct = [math]::Round($wkFreePct)
$wkResults = " Size: " + $wkSizeGB.ToString("0.00") + " Free: " + $wkFreeGB.ToString("0.00")
$wkResults += " (" + $wkFreePct + "%)"
Write-Host $wkResults
}
else {
Write-host "Catch failed"
}
The host "Apathy.computrollls.com" does not exist. I get other errors in my production script, but I used this to test the error handling. It does not execute the statements in the Catch. Here is the output:
PS C:\Batch Jobs> . "c:\Batch Jobs\Test Disk Space.ps1"
[DBG]: PS C:\Batch Jobs>
Get-WmiObject: The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)
[DBG]: PS C:\Batch Jobs>
[DBG]: PS C:\Batch Jobs>
Catch failed
PS C:\Batch Jobs>