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VMware Host Performance Sensor Errors since




I am running three PRTG instances -- two on HP DL380 G6s running HP images of VMware 5.5 one on a HP N54L (microserver) also running an HP image of VMware 5.5.

Everything was working great on the N54L until I performed the latest PRTG upgrade. Since then, twice, both on Sundays, I have received the following error...

PRTG Network Monitor (WS2008)] MicroServer VMware Host Performance MicroServer (VMware Host Performance (SOAP)) Down (XML: Out of memory -- JSON: The returned json does not match the expected structure (Invalid JSON.). (code: PE231))

As far as I can tell the VMware host in question system is running fine. The sensor stops collecting data until it has been restarted. It then appears to run for about a week before tripping up on something again.

Any idea what is going on?

host-performance prtg vmware

Created on Jun 1, 2015 3:40:01 AM

3 Replies



Can you try to reboot your PRTG server? The issue should be solved by that. This is probably due to a bug in the current stable version which will soon be fixed. Please bear with us on this one.

Created on Jun 2, 2015 12:31:40 PM by  Stephan Linke [Paessler Support]



I started seeing this same issue this morning where PRTG is reporting this error on a group of HP DL360-G8 ESXi hosts. Rebooted both Windows servers (2008-R2) that host PRTG in a cluster and then upgraded PRTG to but the warnings persist. Will keep a watch on this issue.

Created on Sep 17, 2018 5:44:34 PM



Hi Jim,

The DL360 Gen8 are no longer supported by the latest ESXi version (according to VMWare). Did you upgrade the systems prior to the error occurring by any chance? I assume the errors in the sensor include the L2 cache and other hardware stuff (to a vast amount)?

Kind regards,
Stephan Linke, Tech Support Team

Created on Sep 18, 2018 8:43:29 AM by  Stephan Linke [Paessler Support]

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