The earliest recollection of this bug is traced back to PAN-OS 10.2.5 - November 18, 2024. This bug is fixed in PAN-OS versions 10.2.8, 11.0.4. Users are unable to log in to the GlobalProtect app using SAML authentication after the app is upgraded to 10.2.3-h4 and the GlobalProtect logs display the following error message: Username from SAML SSO response is different from the input. . Fixed an issue where users were unable to log in to the GlobalProtect app using SAML authentication after upgrading to PAN-OS 10.2.3-h4, and the GlobalProtect logs displayed the following error message: Username from SAML SSO response is different from the input . For more information: https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-release-notes/pan-os-10-2-5-known-and-addressed-issues/pan-os-10-2-5-known-issues https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-release-notes/pan-os-10-2-6-known-and-addressed-issues/pan-os-10-2-6-known-issues https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-release-notes/pan-os-10-2-7-known-and-addressed-issues/pan-os-10-2-7-known-issues https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-release-notes/pan-os-10-2-8-known-and-addressed-issues/pan-os-10-2-8-addressed-issues https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-release-notes/pan-os-11-0-4-known-and-addressed-issues/pan-os-11-0-4-addressed-issues