Attempting to mount Exchange Server 2016 DAG database with 1 of 2 nodes down throws the error: “Error: An Active Manager operation failed. Error: An Active Manager operation encountered an error. To perform this operation, the server must be a member of a database availability group, and the database availability group must have quorum. Error: Automount consensus not reached (Reason: ConcensusUnanimity does not allow auto mount. (IsAllNodesUp: False)).”
Problem You have two Exchange 2016 mailbox servers configured as a DAG and one server providing witness servers. One of the mailbox server experiences an issue and goes down so the remaining mailbox server continues to service mailbox requests and has the databases mounted. The