title: Can't access the SQL Server engine even from Management Studio
body: <p>I just installed SQL Server 2012 Express edition on my computer (Windows 8). </p>
  
  <p>When I try to create a database from the Management studio, I'm getting the following error:</p>
  
  <blockquote>
    <p>Create failed for Database 'TestDB'.  (Microsoft.SqlServer.Smo)<br>
    CREATE DATABASE permission denied in database 'master'.<br>
    (Microsoft SQL Server, Error: 262)</p>
  </blockquote>
  
  <p>When I try to access it from the visual studio, I'm getting the following similar error message:</p>
  
  <blockquote>
    <p>CREATE DATABASE permission denied in database 'master'.</p>
  </blockquote>
  
  <p>Is there any reason for that? I can't even access the engine from the management studio.</p>
  
  <p>EDIT</p>
  
  <p>Here's my connection string</p>
  
  <pre><code>&lt;add name="DefaultConnection" 
       connectionString="Data Source=localhost\sqlexpress;Initial   
          Catalog=OptimumWeightDB;Integrated Security=True;
          Integrated Security=True;
          User Id=sa;Password=mypassword" " 
       providerName="System.Data.SqlClient" /&gt;
  </code></pre>
  
  <p>This is the context class</p>
  
  <pre><code>public class OWDbContext : DbContext
  {
      public OWDbContext()
          : base("DefaultConnection") { }
  }
  </code></pre>