Certificate import error - Import of Certificate failed. Failed to extract certificate.
Sometimes when you try to import a certificate to the Palo Alto Networks firewall you might see this error "Import of Certificate failed. Failed to extract certificate." In this example, we are using the certificate DigiCert High Assurance CA-3.
The certificate format is not feasible with the Palo Alto Networks, which is why the error occurs.
This is what the certificate looks like in Notepad: