title: C#: how to connect to sql server 2008 express from another lan computer and windows authentication?
body: <p>I have a SQL Server installed in a windows XP professional. If I run the application in the local computer, I can access to the database, but if I run the application in another computer that is in the same lan, I get the underlaying provider filed error.</p>
  
  <p>I have the SQL Server browser started, I have enabled the TCP/IP protocols and I try to create a new user int my windows XP with the same name and password that the user of the other computer (use Windows 7) and create a new login.</p>
  
  <p>In my connection string is the following:</p>
  
  <pre><code>&lt;add name="myConnection" connectionString="metadata=res://*/Model.myModel.csdl|res://*/Model.myModel.ssdl|res://*/Model.myModel.msl;provider=System.Data.SqlClient;provider connection string=&amp;quot;data source=192.168.1.5\SQLEXPRESS;initial catalog=myDataBase;integrated security=true;multipleactiveresultsets=True;App=EntityFramework&amp;quot;" providerName="System.Data.EntityClient"/&gt;
  </code></pre>
  
  <p>I have installed IIS 6.1, but I don't know how to configure, and I don't know if this can be a solution.</p>
  
  <p>I would like to use windows authentication. is it possible if I have installed sql server 2008 express in Windows xp?</p>
  
  <p>EDIT 01:</p>
  
  <p>I try disabling the firewall and the problem is not resolved.</p>