Hi, my setup is:
2 servers, each with multiple named instances, on one instance I have set up an AG between the two servers.
I am trying to add a new AG on the same instances, but when I try to add the secondary replica, when I go to "join to availability group" I get the error:
TITLE: Microsoft SQL Server Management Studio
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Failed to join the instance 'server\ins02' to the availability group 'agname'. (Microsoft.SqlServer.Management.SDK.TaskForms)
ADDITIONAL INFORMATION:
An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo)
Failed to join local availability replica to availability group 'OSLAGSSM001P'. The operation encountered SQL Server error 41106 and has been rolled back. Check the SQL Server error log for more details. When the cause of the error has been resolved, retry the ALTER AVAILABILITY GROUP JOIN command. (Microsoft SQL Server, Error: 41158)