Basic problem

I downloaded SQLExpress and Visual Studio Express to my home computer.

I built a simple database, adding data through theSQLexpress admin tool.

I built a web page using MS Studio. I connected to the database and used the webpage for a few days. Then I restarted the computer. Now the web page won't open, and MS Studio won't open the MDF file in the App_Data folder.

I can still see and work in the database through SQL server Express.

The web page and the MSStudio attempt to connect to the mdf file both fail with this message:

Cannot open user default database. Login failed.
Login failed for user 'KAAAK/Administrator'.

So it seems to be trying to connect as the Windows user.

When I try to modify the connection to connect through a user/password I created in SQL manager, I get a message that the user is not a trusted SQL user.

from web.config:

<

connectionStrings>

<

addname="ConnectionString"connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\info.mdf;Integrated Security=True;User Instance=True;User ID=Admin;Password=12345"providerName="System.Data.SqlClient"/>

</

connectionStrings>

That was changed from the original string created automatically by MS Studio

<

connectionStrings>

<

addname="stocksConnectionString"connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\stocks.mdf;Integrated Security=True;User Instance=True;"providerName="System.Data.SqlClient"/>

</

connectionStrings>I am sure this is some simple problem, but why would the system refuse to access an mdf file it had already been accessing.?

Thanks, Michael

Hi!,

This may happen because the SQL server is configure for windows authentication only. Change to mixed mode.

Hope this will help.

Regards