What is this?

This knowledgebase contains questions and answers about PRTG Network Monitor and network monitoring in general.

Learn more

PRTG Network Monitor

Intuitive to Use. Easy to manage.
More than 500,000 users rely on Paessler PRTG every day. Find out how you can reduce cost, increase QoS and ease planning, as well.

Free Download

Top Tags

View all Tags

"Error reading response: missing /prtg" - from time to time



We frequently encounter the error message "Error reading response: missing /prtg" on a bunch of our sensors, often the ones of type XMLEXESENSOR.

In our shop we have a cluster probe with two nodes.

The above error only shows up on the first node, while the sensor on the other node says "OK". After a while ( could be minutes ) the error disappears and the sensor show OK.

Needless to say that this behavior is annoying when someone relies on the status of the sensor.

I've found a number of related discussions but none of the suggested solutions are appropriate.

Any suggestions/ideas on how to solve this issue? Or directions for further investigating the problem would be helpfull.

error prtg xml

Created on May 13, 2013 8:40:23 AM

1 Reply



Could you enable "Write result to disk (Filename: "Result of Sensor [ID].txt") " for one of these sensors and send the resulting log to [email protected]? Also, when you send over those results, can you include your system logs?

Created on May 13, 2013 2:33:32 PM by  Greg Campion [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.