I recently created a Database Availability Group for my Exchange 2019 Mailbox Servers.
However, I can't seem to add Members to the new DAG.
In looking at the DAG Tasks logs I keep seeing an Access Denied message.
I verified my user has adequate permissions (Organization Management), the Witness server is in the Exchange Trusted Subsystem and the Local Administrators group on the witness server has Exchange Trusted Subsystem.
The DAG CNO took awhile to show up in my AD and I verified it is not in Exchange Trusted Subsystem. Does it need to be?
Please note - The DAG was created before the Failover Cluster feature was installed on the Exchange Server. One article I read suggested this may be the problem. The DAG does not have permissions to the Failover Cluster Service because Failover Cluster did not exist when DAG was created. Do I need to recreate the DAG? And if so, how difficult is this task (given there are no members configured in the DAG)?
Please Advise.
Thank you,