When a Windows Server 2025 member server tries to establish a secure channel to a DC that runs Windows Server 2022 or an earlier version, it starts the connection by using the new Kerberos authentication method. Older DCs don't support this new authentication Remote Procedure Call (RPC) call. Because of this lack of support, authentication fails and Windows logs Event ID 5719. In this situation, the system automatically falls back to the legacy NetLogon method to successfully establish the secure channel.
0 commit comments