Hi @Cochran, Adam • Thank you for reaching out.
As of now, MFA is not supported at the time of login to Windows locally.
You can however require MFA when you are RDP'ing to a Windows device. For this purpose, you need to have a Remote Desktop Gateway server, NPS Server, Users synced from local AD to Azure AD, and NPS Extension installed. You can require users to perform MFA when they establish an RDP connection via RD Gateway.
If you want MFA at the time of login to Windows locally, I would suggest you to keep using DUO as of now.
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