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Custom sensor: Get-Process with Powershell




I have a simple Powershell script:

Get-Process -ComputerName "REMOTE-COMPUTER" >> "C:\TEMP\result.txt"\\
echo "0: Ok"\\
Exit 0\\

- From Powershell console it's Ok - From PRTG custom sensor doesn't work => This file result.txt is empty

I have no error in PRTG...

Have you an idea?


get-process powershell script

Created on Apr 7, 2015 12:50:39 PM

Last change on Apr 7, 2015 12:54:39 PM by  Torsten Lindner [Paessler Support]

3 Replies



When calling get-process directly you are authenticating as the calling user against the remote machine. In case of PRTG this is LOCAL SYSTEM which has no permissions at all on the remote machine. Try using invoke-command and pass explicit credentials, example code below:

    [string]$user = "USERNAME",
    [string]$domain = "DOMAIN",
    [string]$password = "PASSWORD",
    [string]$target = "TARGETCOMPUTER"

$secpassword = $password | ConvertTo-SecureString -AsPlainText -Force
$creds = New-Object System.Management.Automation.PSCredential(("{0}\{1}" -f ,$domain, $user), $secpassword)

Invoke-Command {get-Process} -ComputerName $name -Credential $creds
# Do your stuff

Best regards

Created on Apr 8, 2015 11:52:25 AM by  Konstantin Wolff [Paessler Support]




Thanks for your response.

This is not a bug?

My PRTG service is started with a Domain User, it should not run Powershell also with this user?


Created on Apr 9, 2015 7:20:47 AM



Although the PRTG Probe service might be running with an AD user, explicit authentication might be necessary. So please try adjusting your script to use explicit authentication. Does the script work then?

Created on Apr 10, 2015 11:38:26 AM by  Konstantin Wolff [Paessler Support]

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.