title: What does this SQL Database error mean in C#?
body: <p>I was adding a service-based database, but I got this message:</p>
  
  <p>A network-related or instance-specific error occurred while establishing a connection to the 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: 26 - Error Locating Server/Instance Specified)</p>
  
  <p>I am an absolute beginner, so I have no idea how to fix this. I am following the book "O'Reilly Head First C Sharp Nov 2007" edition.</p>
  
  <p>I am on page 18, it is asking me to add an SQL Database, in which I get that error message.</p>
  
  <p>I'm a beginner programmer, so I don't know anything technical. I'm starting knowing nothing.</p>