SQL Server AlwaysOn AG Secondary Replica is not joined I have created an Availablity Group on SQL Server 2019. I selected 2 SQL server for  Replicas but the Secondary replica has an error:


  This secondary database is not joined to the availability group. The configuration of this secondary database is incomplete. For information about how to join a secondary database to an availability group, see SQL Server Books Online.


When I want to add manually I give an error:


  An availability replica already exists...


What the problem?
I found the problem. It is my authentication method problem. I changed my account and it is resolved.