You may be better off attaching the database to SQL Server manually using the new (and free) Express management tool, and then use a different connection string to attach to the database on the main instance of Express.

That said, have you tried setting User Instance to True on the connection string?

Imar
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Imar Spaanjaars
Everyone is unique, except for me.
Author of ASP.NET 2.0 Instant Results and Beginning Dreamweaver MX / MX 2004

Hi Imar,

I found the solution. I demoted the domain in order to make a stand-alone server, and now it works ...
The error said :" ... Check that the user has a local user profile on the computer."
But on a DC, there is no local users, only domain users, so i thing that was the problem.

Mention it in your next book ...
Thanks

Hi hertendreef,

Thanks for the follow up. I am sure someone in the future will find this post very useful.

I have also added it to my list of stuff to add in future books.

Cheers,

Imar
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Imar Spaanjaars
Everyone is unique, except for me.
Author of ASP.NET 2.0 Instant Results and Beginning Dreamweaver MX / MX 2004