I am monitoring a number of VMware hosts with PRTG (build 188.8.131.5255). The VMware devices are monitored by a remote PRTG probe in the same site (and IP subnet) as the VMware hosts.
I am decommissioning the server the PRTG probe is installed on, so have installed a new remote PRTG probe in the same site. When I move the devices to the new probe many of the sensors alarm with the message "Error reading response: missing /prtg". If I move the device back to the original probe then the alarms clear.
Both remote probes are running Windows Server 2008 R2 Standard in 64bit.