What sensor is this error coming from? Most likely this is a problem with the WMI system on the target server and the only way to fix it would be to run through the steps in the articles about repairing WMI that are here in the KB:

• My WMI sensors don't work. What can I do?
  • I have tried a lot of things to fix my WMI. What else can I try to avoid reinstalling Windows?

    Best Regards,
    Greg Campion [Paessler Support]

    Ok, I tried this and it still doesn't work. And I just saw that a bit of the Title is missing. So here is the full error message:

    I got over those Articles again and found a hotfix from microsoft which it seems I have overseen it before. This was the only thing of them all which worked. The article im reffering to is:

    • I have tried a lot of things to fix my WMI. What else can I try to avoid reinstalling Windows?

      For everyone who has the same Problem, here's the link to the hotfix:

      • The WMI service and the WMI providers stop responding when you use WMI performance classes to monitor performance on a computer that is running Windows 7 or Windows Server 2008 R2

      I was having exactly the same problem:

    WMI: 80041017: The query was not syntactically valid. -- PerfCounter: The specified object is not found on the system. (Error # 0xC0000BB8)

    Just running the command lodctr /r worked for us. Thanks to Greg Campion [Paessler Support] .

    WMI: 80041017: The query was not syntactically valid. -- PerfCounter: The specified object is not found on the system. (Performance Counter error 0xC0000BB8)