DB cannot be opened because it is version 655. This server supports version 612
I'm trying to do some excercises from exam 70-515. Unfortunately I fail while trying to attach Northwind to a grid-control. It would result in:
NORTHWND.MDF' cannot be opened because it is version 655. This server supports version 612 and earlier. A downgrade path is not supported.
I use Windows 7 Home and MS Visual Web Developer 2010 Express. As fas as I understand this error, SQL Express must be an old version on my system. I downloaded and installed SQL Express 2008r2 from here. No effect. From other sources I figured out that I might need to change the instance name: Tools -> Options -> Database Tools -> Data Connections -> SQL Server Instance Name. There it is written SQLEXPRESS. I don't know what else I should insert there?
Answer
Turns out that deinstalling SQL Express and reinstall the latest version fixed the problem. I chose SQLSERVER2008 as Instance-Name while installing and set it in Visual Studio as described above.