I notice today with our Palo Alto devices. I can no longer monitor traffic on the monitoring tab using either the Traffic or URL Filtering options. I’m getting an error that states “Invalid XML response from server”. Do you know of a quick way that I can resolve this issue.
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I would recommend you to verify the management-plane resources utilization on that PAN firewall.
> show system resources follow
See management-server, log-receiver, device-server CPU and memory utilization.
> show logging-status
> debug log-receiver statistics
Sample output: Please apply the above mentioned CLI command multiple times and verify if those counters are incrementing.
Log incoming rate: 0/sec
Log written rate: 0/sec >>>>>>>>>>>>>>>>
Corrupted packets: 0
Corrupted URL packets: 0
Logs discarded (queue full): 0 >>>>>>>>>>>>>>
Traffic logs written: 4 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
URL logs written: 0
Wildfire logs written: 0
Anti-virus logs written: 0
Spyware logs written: 0
Attack logs written: 0
Vulnerability logs written: 0
Fileext logs written: 0
URL cache age out count: 0
URL cache full count: 0
URL cache key exist count: 0
If you observe,"traffic log written" counter is incrementing but still unable to see logs from GUI, then follow below mentioned command.
> debug software restart log-receiver
> debug software restart device-server
> debug software restart management-server
It would not impact to the production traffic through this PAN firewall.
Hope this helps. If you have any further questions or inquiries, please update here.
I resolved the problem enabling ActiveX on iE11. My scenario is a PAN-OS 8.1.1 updated. When I tried to access using firewall's IP address I didn't see any pop-up or alert in any place but using the FQDN, an blue forbidden icon appeared in navigation bar. In my case, the Group Policy Objects (GPO) disabled the ActiveX and that caused the message: "Invalid XML response from server".
I hope this is useful.
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