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Something which happened recently in June 2022 and may be of interest to Windows driver signers who have DigiCert code signing certificates.
https://knowledge.digicert.com/solution/authenticode-signature-verification-fails-with-new-timestamping-cross-root.html
Short take: An updated DigiCert time stamp certificate can cause signing validation errors if your code signing certificate was also from DigiCert. DigiCert has provided a cross-certificate intended to work around the issue during signing.
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