The earliest recollection of this bug is traced back to PAN-OS 9.1.13 - July 29, 2024.
This bug is fixed in PAN-OS versions 9.1.13.
Fixed an issue where timed-out DNS Security queries produced incorrect system log entries indicating cloud service connection refused . With this fix, timed-out queries are correctly logged as cloud query timeout .
For more information:
https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-release-notes/pan-os-9-1-addressed-issues/pan-os-9-1-13-addressed-issues