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I ran a project on Microsoft Visual Studio 2010 express and it came up with this error: Version 661 cannot be opened, server supports 655 and earlier. I do not know the steps to proceed to fix this problem. Does anyone have a possible solution?

Dylan Corriveau
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Evan Wiley
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  • possible duplicate of [SQL Server: attach incorrect version 661](http://stackoverflow.com/questions/4257684/sql-server-attach-incorrect-version-661) – sha May 31 '13 at 03:39

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I've come across this several times, on dbs attached by endusers. You're probably trying to deal with a 2008R2 db on a 2008 instance.

It doesn't help that the various Microsoft teams have mixed up the sequence of database version numbers

661 is SQL2008R2

655, 662 is SQL2008SP2

Also note that the error messages can be confusing sometimes because you'd expect all versions of 2008R2 to have a higher number than versions of 2008. But sometimes they don't!

John Alan
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