Trying to attach a database fails because it is version 782 - sql-server

Question

I recently reinstalled Windows and am trying to set up SQL Server again with an existing database. I've tried installing SQL Server 2012 and 2014, and continuously get the same error. The error says that the database is version 782 and this version of SQL Server is only compatible with 706 and below. I get this error with both SQL Server 2012 and 2014. I thought 2014 was compatible with 782+.. Can anyone provide me with some guidance as to how to attach a damn database? Frustrated...
Image from SQL Server 2014..
and just to note, I get the same error in 2012. Everything was functioning before the OS reinstall.

Answer 1

Database must be set to older or same version of the server. You cannot use 2012 server with 2014 database.
According to this link: http://sqlserverbuilds.blogspot.com/2014/01/sql-server-internal-database-versions.html 782 is version 2014 and you cannot use earlier versions.
If you tried SQL Server 2014, update to latest version.
Also make sure you install server not just management tools, since you say that the image is from 2014 but server supports 706, which means it's 2012.
You can do 'SELECT ##version' from your management studio to see on which version of server you're running.

Answer 2

If you are using a LocalDB 2014 the all you need to do is make sure that your connection string is pointing to the correct instance.
So change
"Data Source=(Localdb)\v11.0"
to
"Data Source=(Localdb)\v12.0"
or
"Data Source=(Localdb)\mssqllocaldb"

Answer 3

I find out two SQL instances were running and on the server name I was mentioning the old SQLExpress instance.
ServerName\SQLExpress
I just change the instance to the newer instance, in this case SQLServer2014 instance and it solved my problem.
ServerName\SQLServer2014

Answer 4

From this answer to "The database cannot be opened because it is version 782. This server supports version 706 and earlier. A downgrade path is not supported".
Try to change the compatibility level - it worked for me.
To verify what level it is:
USE VJ_DATABASE;
GO
SELECT compatibility_level
FROM sys.databases WHERE name = 'VJ_DATABASE';
GO
Then, to make it compatible with the older version:
ALTER DATABASE VJ_DATABASE
SET COMPATIBILITY_LEVEL = 110;
GO
100 = Sql Server 2008
110 = Sql Server 2012
120 = Sql Server 2014
By default, Sql Server 2014 will change the db versions compatibility
to only 2014, using the ## version you should be able to tell which
version Sql Server is.
Then run the command above to change it the version you have.
Additional step: Ensure you look at the accessibility of the DB is not
reset, do this by right clicking on properties of the folder and the
database. (make sure you have rights so you don't get an access
denied)

Answer 5

Another solution is to migrate the database to e.g 2012 when you "export" the DB from e.g. Sql Server manager 2014. Please find the solution here:
The database cannot be opened because it is version 782. This server supports version 706 and earlier. A downgrade path is not supported

Answer 6

Possibly:
You already have installed LocalDB with SQL version older than now.
You did not remove an old SQL express LocalDB, and the connection is to the old LocalDB.
Handling:
Update your sql express to the newest version.
Go to the new installed SqlLocalDB (the default is: "C:\Program Files\Microsoft SQL Server\130\LocalDB\Binn")
list, stop, delete the old LocalDB and other old instance with cmd.exe at administrator's privilege.
list: SqlLocalDB.exe i
stop: SqlLocalDB.exe p "MSSQLLocalDN"
delete: SqlLocalDB.exe delete "MSSQlLocalDB"
Finally, reboot your Visual studio and reload your project.