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Has MSFT really pulled the plug?
This is what digicert says:
On August 1, 2019, Microsoft announced the Microsoft Trusted Root Program is ending support for cross-signed root certificates with kernel-mode signing capabilities. In 2021, most of the cross-signed certificates expire.
When the cross-signed certificate that your code signing certificate is chained to expires, you will no longer be able to create new > kernel-mode digital signatures. This affects all version of Windows. To learn more about Microsoft's deprecation plans for kernel-mode digital signatures, see Deprecation of Software Publisher Certificates, Commercial Release Certificates, and Commercial Test Certificates.
Note: All existing cross-signed root certificates with kernel-mode signing capabilities continue to work until they expire. See Expiration dates of DigiCert brand trusted cross-signed certificates below._
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