Unable to create/edit page after a fresh installation of Confluence with MS SQL Server. Synchrony could not load driverClass net.sourceforge.jtds.jdbc.Driver

STEPS TO REPLICATE

1. Install Confluence version 6.4.2 (using atlassian-confluence-6.4.2.tar.gz for this test)
2. During the database setup, Driver Class Name is automatically set to use com.microsoft.sqlserver.jdbc.SQLServerDriver as per screenshot below:
   
3. Enter the database URL and credential.
4. Complete the installation.

EXPECTED BEHAVIOUR
User able to create a page after the installation.

ACTUAL BEHAVIOUR
Stack trace below appear in Confluence <HOME_directory>/logs/atlassian-synchrony.log:

2017-10-20 21:40:11,815 DEBUG [197:StdOutHandler [/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/bin/java]] Could not load driverClass net.sourceforge.jtds.jdbc.Driver
2017-10-20 21:40:11,815 DEBUG [197:StdOutHandler [/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/bin/java]] java.lang.ClassNotFoundException: net.sourceforge.jtds.jdbc.Driver

User unable to create/edit page:

WORKAROUND
update the jtds url to a correctly formatted Microsoft SQL Server driver url as per their documentation (https://docs.microsoft.com/en-us/sql/connect/jdbc/building-the-connection-url) :

1. Stop Confluence
2. Navigate to Confluence <HOME_directory>/confluence.cfg.xml file and replace the line below:

   <property name="hibernate.connection.url">jdbc:jtds:sqlserver://localhost:1433/confluence</property>
   

   with:

   <property name="hibernate.connection.url">jdbc:sqlserver://localhost:1433;databaseName=confluence</property>
   

1. Start Confluence