Driver digital signature authentication issues

Both submissions can produce a Microsoft-trusted signature, but provide different assurances and distribution rights. An HLK-tested submission validates compatibility, is Microsoft’s recommended production route, can qualify as Windows Certified, supports retail Windows Update distribution, and is required for relevant Windows Server drivers. Attestation skips HLK and proves package trust, not compatibility or functionality. Microsoft describes attestation as testing-only for Windows 10 desktop and later; those drivers cannot reach retail audiences through Windows Update. For a customer-shipped kernel driver, use HLK and the Windows Hardware Compatibility Program unless Microsoft documents an exception for that driver class. Build a complete INF, catalog, and driver package, test each target architecture and Windows release, run the applicable HLK playlist, and submit the resulting package through Partner Center. Use attestation only for controlled client testing, not as a substitute for production qualification.