The Kerberos protocol encountered an error while validating the KDC certificate during smartcard logon.

  • Thread starter Thread starter Brandon Taylor3
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Brandon Taylor3

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Hello,I have an issuing CA, an offline root CA, and another (legacy, shouldn't be used anymore) online root CA. I am utilizing the new CA infrastructure to provide smartcard logon options for MFA. And it's working great for on-site devices and domain-joined devices over VPN. However, the issue I'm encountering happens when anyone tries to logon to a remote computer via RDP from a non-domain joined device. The error I receive is:The Kerberos protocol encountered an error while validating the KDC certificate during smartcard logon.I have looked at certutil -dcinfo and verify, but all comes back

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