The earliest recollection of this bug is traced back to PAN-OS 8.1.1 - January 09, 2024. This bug is fixed in PAN-OS versions 8.1.1. Fixed an issue where the Check URL Category link in URL Filtering profiles opened a page that displayed a page not found error instead of opening the web page used to check the PAN-DB URL Filtering database for the URL Filtering category of a URL ( Objects Security Profiles URL Filtering ). For more information: https://docs.paloaltonetworks.com/pan-os/8-1/pan-os-release-notes/pan-os-8-1-addressed-issues/pan-os-8-1-1-addressed-issues