The earliest recollection of this bug is traced back to PAN-OS 8.1.14 - January 08, 2024. This bug is fixed in PAN-OS versions 9.1.3, 8.1.14. Fixed an issue with Security Assertion Markup Language (SAML) authentication where the firewall used old authd_id values, which resulted in failed authentication. For more information: https://docs.paloaltonetworks.com/pan-os/8-1/pan-os-release-notes/pan-os-8-1-addressed-issues/pan-os-8-1-14-addressed-issues https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-release-notes/pan-os-9-1-addressed-issues/pan-os-9-1-3-addressed-issues