One way to be sure is that open ur project in Eclipse and write a peice of code to connect to DB using tha same JDBC url.see if you are successful.
If it works here it will work in mendix too AFAIK.
Hi,
The database connector also already comes with a bunch of drivers included with the module, did you check the lib that you didnt put double drivers for the Microsoft JDBC?
I figured out the problem: I had to remove 'microsoft' from my jdbc string and it worked.
That is, the jdbc string used to be
' jdbcUrl=jdbc:microsoft:sqlserver://<server name>:<port>;databaseName=<database>',
then I changed it to
' jdbcUrl=jdbc:sqlserver://<server name>:<port>;databaseName=<database>'
and that fixed the problem.