Symptoms
Assume that you create a snapshot on a database that contains FILESTREAM filegroups in Microsoft SQL Server 2012 or SQL Server 2014, and FILESTREAM non-transactional access is enabled on the database. After you restart the SQL Server service, non-transactional access is disabled on the database. Additionally, you receive the following error message 33415 in the error log:
FILESTREAM DIRECTORY_NAME '<directory_name>' attempting to be set on database '<database_name>' is not unique in this SQL Server instance. Provide a unique value for the database option FILESTREAM DIRECTORY_NAME to enable non-transacted access.
When you try to alter the database, you also receive the error message 33415, and the database is not altered.
Resolution
The issue was first fixed in the following cumulative update of SQL Server.
Cumulative Update 1 for SQL Server 2014 SP1 /en-us/help/3067839
Cumulative Update 8 for SQL Server 2014 /en-us/help/3067836
Cumulative Update 6 for SQL Server 2012 SP2
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.