How to troubleshoot 'Collector preference list does not exist'

Steps to troubleshoot "Log Collector Preference List does not exist" message.

• Panorama
• Strata Logging Services (SLS)
• PAN-OS 10.1 and above
• The firewall is not able to forward logs to Panorama
• The firewall is not able to forward logs to Strata Logging Services
• Having the same result as below:

> show log-collector preference-list
Log Collector Preference List does not exist

• logrcvr.log (less mp-log logrcvr.log) is generating the sample log below:

-0800 Collector preference list does not exist /opt/pancfg/mgmt/global/lcs-pref.xml 

1. Ensure that Panorama is not running in Legacy mode. You can reference Switching Panorama VM from Legacy mode to Panorama mode for guidance.
2. Utilize Configure a Collector Group as a guide
3. If the previous procedures do not resolve the issue, refer to  Firewall not sending logs to correct log collector
4. As a last resort, restart the following services in the NGFW

> debug software restart log-receiver
> debug software restart process management-server 

Note: Typically restarting the management server process does not affect the packet forwarding except that the admin will be kicked out. For details Refer How to restart management server process.

• If you are a Strata Logging Service (SLS) user, please open a TAC case and instruct the engineer to use the internal KB provided below:
  • Article Number: 000023158
  • Title: "Logging Service Preference List does not exist" : CDL : FW does not send logs to CDL.