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Why don't my Hyper-V sensors work after changing names?



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After renaming my virtual machine, network card, or disk resource name, PRTG shows a red Down status, indicating an error. I am sure my devices are up and running.

Why do my Hyper-V sensors show an error message?

hyper-v prtg virtual-machine vm wmi

Created on Feb 8, 2011 3:45:58 PM by  Daniel Zobel [Product Manager]

Last change on May 6, 2019 11:49:05 AM by  Maike Guba [Paessler Support]

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This article applies as of PRTG 21

Hyper-V sensors and changing names

We recommend that you do not rename virtual machines once you have set up monitoring. If you have renamed a Hyper-V virtual machine, network card, or resource name, please perform the following steps to be able to monitor it again.

Note: Previously collected historic data will not be available in the new sensor's tables and graphs.

  1. Restart your Hyper-V host server.
  2. In PRTG, add the respective sensors again:

Note: You cannot monitor virtual machines if their names contain unsupported characters, for example, a number sign (#). In general, UTF-8 characters are supported.

Created on Feb 8, 2011 3:48:18 PM by  Daniel Zobel [Product Manager]

Last change on Jan 14, 2022 10:34:19 AM by  Frank Hadasch [Paessler Support]

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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.