title: provider: SQL Network Interfaces, error: 25 - Connection string is not valid
body: <p>I developed this application on my local computer using VS2012 and SQL 2008R2. I am trying to move it onto production server. It is a virtual server with 2012 SQL Server. I checked all the properties for remote connection and everything is enabled. The application opens with the login screen and once I enter the username and password (this was created on my computer using WSAT. Now I get this error:
  A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 25 - Connection string is not valid) 
  This is what I have in web.config:</p>
  
  <pre><code>&lt;connectionStrings&gt;
      &lt;remove name="LocalSqlServer" /&gt;
  &lt;add connectionString="Server=\\events;Database=Digital Signage;Integrated Security=true" name="DSConnectionString" /&gt;
      &lt;add connectionString="data source=\\events;Integrated Security=SSPI;AttachDBFilename=c:\\DS\aspnetdb.mdf;User Instance=true" name="LocalSqlServer" providerName="System.Data.SqlClient" /&gt;
  </code></pre>
  
  <p></p>