cdFMC unable to use realm on AD 2025

[AugustoS.Nunes]

Hello all, 

I have a client that is using Microsoft Active Directory on a Windows Server 2025, forest and domain levels 2025 as well.

My team has tried to create a Realm like we done before on other deployments but when we click test on both DC1 and DC2 just fails, we checked firewall, IP connectivity.
Same configuration for a 2019 AD works.

We are using 389 since the client does not have a CA active in this domain, do we need to use for this case? Can we do it with 389?

[Rob Ingram]

@AugustoS.Nunes 2025 doesn't appear to be supported yet. https://www.cisco.com/c/en/us/td/docs/security/cdo/cloud-delivered-firewall-management-center-in-cdo/managing-firewall-threat-defense-services-with-cisco-defense-orchestrator/m_identity-realms.html?bookSearch=true