SQLServerException: The TCP/IP connection to the host, port 1433 has failed.

Error Description:

I had installed SQL SERVER 2014 Express edition and I was trying to connect to SQL SERVER from Java program using JDBC, but I was repeatedly getting following error:

com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host localhost, port 1433 has failed. Error: "connect timed out. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall.".Error while closing connection !!null

 at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:190)

 at com.microsoft.sqlserver.jdbc.SQLServerException.ConvertConnectExceptionToSQLServerException(SQLServerException.java:241)

 at com.microsoft.sqlserver.jdbc.SocketFinder.findSocket(IOBuffer.java:2243)

 at com.microsoft.sqlserver.jdbc.TDSChannel.open(IOBuffer.java:491)

 at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1309)

 at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:991)

 at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:827)

 at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:1012)

 at java.sql.DriverManager.getConnection(Unknown Source)

 at java.sql.DriverManager.getConnection(Unknown Source)

 at Testing.main(Testing.java:42)

SQLServerException: The TCP/IP connection to the host [name], port 1433 has failed. Error: “Connection refused: connect. Verify the connection properties, check that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port, and that no firewall is blocking TCP/IP connections to the port.”

Solution:

                1.       Run the SQL Server Configuration Manager.

                2.       Expand the SQL Server 2005 Network Configuration item.

                3.       Select the Protocols for SQLEXPRESS item.

                4.       Right-click on TCP/IP.

                5.       Select Enable.

                6.       Next, right-click on TCP/IP and choose Properties.

                7.       Click on the IP Addresses tab.

                8.       In the IPALL section, enter the port number 1433 in the TCP Portfield

                9.       Click Apply.

               10.  Click OK.

               11.   Close the SQL Server Configuration Manager.

               12.   Finally go to the Windows Control Panel > Administrative Tools > Services area and Stop            and then Start the SQL Server (Express) service for the changes to take effect.