Connection ERROR to SQL Server - Login failed

Hi all, 

got the same problem here. Want to connect to our SQL Cluter Instance with Windows Authentication. It's no solution for us to use SQL Authentication (could work already) because of our permission restrictions in the company. 

When executing i'll receive an error: 

Execute failed: com.microsoft.sqlserver.jdbc.SQLServerException: Login failed for user 'myUsername'. ClientConnectionId:a25b7435-6db2-4c5a-9d39-fff5fb66d288

Could anyone help to find out where the problem is? 

Thank you for any Help. 

Cheers

 

Here is my Configuration:

Version: 

KNIME 2.11.3

--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.100.v20110502

SQLJDBC Database Driver:

C:\Program Files\KNIME_2.11.3\plugins\jp.co.infocom.cheminfo.jchemlib_14.11.24.0\lib\sqlidbc4-4.0.jar

Microsoft JDBC Driver 4.1 (x64):

-Djava.library.path=C:\Program Files\KNIME_2.11.3\jre\bin\sqljdbc_auth.dll

Connection: 

Database URL: 

jdbc:sqlserver://ClusterInstance01\ClusterInstance01;databasename=CustomerDatabase

Username & Password:

defined and valid

Tests:

with ODBCNo problems with the SQL Server Native Clients

with integrated security - No problems (with this database url - jdbc:sqlserver://ClusterInstance01\ClusterInstance01;databasename=CustomerDatabase;integratedSecurity=true)