title: Unable to auto-attach aspnetdb.mdb in VS2010
body: <p>I am using website application in VS2010.  It populated data by reading app.config file from another library application.  So I copied the connection string both in library project
  and in website application's Web.config.</p>
  
  <p>But when I run the application it throw error as <strong>"unable to  auto attach aspnetdb.mdb"</strong>.</p>
  
  <p>I did configure aspnetdb.mdb or attached it in my application.
  Even I did not write any connection string to read aspnetdb.mdb.</p>
  
  <p>My question is by default do we need to attach such mdb in asp.net 4.0 website project? I  have not had such problem in VS2005 and 2008.</p>
  
  <p>I am using SQL Server 2008 professional edition.</p>