When you add a database to an Availability Group (SQL Server 2014) with the option full database and log backup as your synchronisation preference. The validation gives an error by checking the shared network location.
This is the error message "
Drop failed for Database 'BackupLocDb_43b39f5f-b738-4c23-a743-4f81d2eb98f4'. (Microsoft.SqlServer.Management.HadrModel)Cannot drop database "BackupLocDb_43b39f5f-b738-4c23-a743-4f81d2eb98f4" because it is currently in use. (Microsoft SQL Server, Error:
3702)