You cannot attach that database file (version ‘661’) to the instance of SQL Server that you specified (version ‘700’)

When double click on the existing mdf  in VS 11 you will get an error like the one below.


You cannot attach that database file (version ‘661’) to the instance of SQL Server that you specified (version ‘700’)

To resolve this issue, upgrade the database file, or attach it to an instance that supports that database file at its current version. You can specify the instance in the .config file or in the Options dialog box, which you open by choosing Options on the Tools menu. In the Options dialog box, expand the Database Tools node, choose the Database Connections node, and then update the SQL Server Instance Name field.


To solve this:

1. Install Denali Management Studio.

2. Attach the mdf file.

3. Change the database property to Denali database type.

Watch the video.

Denali 600 error



About chanmingman

Since March 2011 Microsoft Live Spaces migrated to Wordpress ( till now, I have is over 1 million viewers. This blog is about more than 50% telling you how to resolve error messages, especial for Microsoft products. The blog also has a lot of guidance teaching you how to get stated certain Microsoft technologies. The blog also uses as a help to keep my memory. The blog is never meant to give people consulting services or silver bullet solutions. It is a contribution to the community. Thanks for your support over the years. Ming Man is Microsoft MVP since year 2006. He is a software development manager for a multinational company. With 25 years of experience in the IT field, he has developed system using Clipper, COBOL, VB5, VB6, VB.NET, Java and C #. He has been using Visual Studio (.NET) since the Beta back in year 2000. He and the team have developed many projects using .NET platform such as SCM, and HR based applications. He is familiar with the N-Tier design of business application and is also an expert with database experience in MS SQL, Oracle and AS 400.
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