Database connection with ColdFusion (xampp- coldfusion)

Hello,

I need your help.

I created a database on xampp called  "coldtest" and I would like to work on this database with Cold Fusion.

I can not associate the xampp database with the cold fusion administrator.

I receive the following error:

Connection verification failed for data source: coldtest
java.sql.SQLNonTransientConnectionException: [Macromedia][SQLServer JDBC Driver]java.lang.ArrayIndexOutOfBoundsException: -7
The root cause was that: java.sql.SQLNonTransientConnectionException: [Macromedia][SQLServer JDBC Driver]java.lang.ArrayIndexOutOfBoundsException: -7

What does this error message mean?

I entered the following information.

I am really beginner on coldfusion

Thank you.