title: Unable to connect SSMS, Microsoft SQL Server, Error: 53
body: <p>SQL Server Management Studio is not connecting on my database server machine at production server.</p>
  <p>Whereas production sites accessing database. When I tried to connect database from SSMS, I get this error:</p>
  <blockquote>
  <p><em>Cannot connect to 111.11.11.11.</em></p>
  <p><em>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: Named
  Pipes Provider, error: 40 - Could not open a connection to SQL Server)
  (Microsoft SQL Server, Error: 53)</em></p>
  </blockquote>
  <p>I was using this SSMS last couple of years,n this SSMS is running fine since more then year on production database server n i didn't closed ever, now when i connecting this SSMS but facing this issue, whereas my sites which accessing this database is working fine.</p>
  <p>I also tried to access database from sqlcmd but no luck n facing facing this error:</p>
  <blockquote>
  <p>HResult 0x35, Level 16, State 1<br />
  Named Pipes Provider: Could not open a connection to SQL Server [53].<br />
  Sqlcmd: Error: Microsoft SQL Server Native Client 10.0 : A network-related or instance-specific error has occurred while establishing a connection to SQL Server.<br />
  Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online..</p>
  </blockquote>