278-Secure Boot Authentication Failure
278-Secure Boot Authentication Failure. One or more UEFI drivers or applications was not authorized due to revoked certificate(s) and was not executed. Action: Update the SW/FW to a revision with a valid certificate.
The current software or firmware revision does not have a valid certificate.
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Update the software or firmware to a revision with a valid certificate.
For more information, see "Firmware updates" in the troubleshooting guide for your product on the Hewlett Packard Enterprise website (http://www.hpe.com/info/enterprise-docs).