FIDO2 security keys are not supported for authentication to Windows Servers.It will automatically use the last registered FIDO2 identity on the token. If you take the same token and use it to logon a Windows 10 PC, it does not give you an option of which identity to use. If you enroll multiple identities with a FIDO2 token, it will allow you to pick which identity to use when doing web authentication.The information here is up to date as of May 2020. For details on the authentication process, see. The client machine now has an Azure AD PRT and a full Active Directory TGT and can access both cloud and on-premises resources.The TGT is then exchanged for a fully formed TGT from an on-premises active directory domain controller.Upon successful authentication, Azure AD provides a Kerberos TGT for the user's on-premises AD domain, encrypted with the key derived from the password of the krbtgt_AzureAD account, along with an Azure AD Primary Refresh Token (PRT).Device logons using FIDO2 security keys authenticate against Azure active directory.What this means is that this authentication model will not apply to users who are members of the following groups:ġ.4 AD DS Authentication using FIDO2 Security Keys To do this with the krbtgt_AzureAD account, use the Set-AzureADKerberosServer cmdlet with the -RotateServerKey switch.Īs with the default configuration of any RODC, built-in privileged groups are not allowed to have their passwords cached on this RODC object. It is a good practice to reset the password of this and all krbtgt accounts on a regular schedule. This creates a read-only domain controller object named AzureADKerberos and an associated Kerberos ticket-granting ticket user account, krbtgt_AzureAD.Ī key derived from the password of this TGT account is securely published to Azure AD. This is done by running the Set-AzureADKerberosServer cmdlet described later in the post.
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