Universal Connector / can't see SQL-DB

Hi out there,

i want to create a new datasource with a SQL-DB via the Universal Connector and the "MS DB-Provider for SQL-Server".
But i can't see or select the database in the option window. There i only see the master/tempdb/mdsb.
when i open the windowsexplorer i can see the other database ….

what's the reason for that issue?

i have another SQL-database without that Problem , also connected like explained above…..
any idea?

regards
jetsetter