[SOLVED] What is the default username and password of my SQL Server Express?

What is the default username and password of my SQL Server Express?

It installed automatically with Visual Studio 2010 Ultimate. I didn't create any users for the server or ANYTHING.

I'm using:

string connectionString = @"Server=.\SQLEXPRESS;Database=SportsStore;Trusted_Connection=yes;";

I get error that authentication failed. So the server is being found, but my credentials are wrong. What would the default login and password be?

Edit: Still not working! :(

Here's my connection string:

string connectionString = @"Server=.\SQLEXPRESS;Database=SportsStore;Integrated Security=SSPI;";

And the error message:

Cannot open database "SportsStore" requested by the login. The login failed. Login failed for user 'ToshibaLaptop\Sergio'.

Solution

You probably should not connect using Sql Server Authentication.

Log in as an Administrator on the box, connect using Integrated Windows Authentication, and you should be a system admin.