CreateCluster() failed with 0x5 adding members to DAG in Exchange 2013
UPDATE: While TechNet article “Create a Database Availability Group” only mentions Windows 2008 R2 domain controllers, I must thank Scott Schnoll for the following clarification: “Creating an Exchange 2013 DAG with Mailbox servers on Windows Server 2012? You must pre-stage CNO before adding first server!”. TechNet documentation will be updated to reflect the same I assume.