Here's how to fix a certificate chain on a Palo Alto firewall
https://thedxt.ca/2024/12/palo-alto-certificate-chain-fix/
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Palo Alto Certificate Chain Fix
An issue I’ve run into on Palo Alto Networks firewalls is that everything seems to work when importing a certificate (usually a PFX). Until you start using the certificate, then after a validation or a commit, there’s a warning that the certificate chain is not correctly formed. Warning: certificate chain not correctly formed in certificate…