ClassNotFoundException for com.microsoft.sqlserver.jdbc.SQLServerDriver

Check whether you have correct Jar file included in your project.

The Microsoft JDBC Driver for SQL Server provides sqljdbc.jar and sqljdbc4.jar class library files to be used depending on your preferred Java Runtime Environment (JRE) settings. For more information about which JAR file to choose, see System Requirements for the JDBC Driver.

The sqljdbc.jar class library provides support for JDBC 3.0 and the sqljdbc4.jar class library provides support for JDBC 4.0.

For more information, please see:

System Requirements for the JDBC Driver
http://msdn.microsoft.com/en-us/library/ms378422.aspx

Using the JDBC Driver
http://msdn.microsoft.com/en-us/library/ms378526.aspx

You can download the sqljdbc4.jar, here : Microsoft JDBC Driver for SQL Server