When I connect to the SqlServer database through autententication of windows in eclipse - Report Design, I get the following error:
I placed the sqljdbc_auth.dll in System32 but nothing, I also put the Classpath Driver sqljdbc42.jar and it does not connect, how could I solve this problem, thanks.
I don't know, but looking at this page (for JasperReports Server, not Studio), I see there are some extra steps, where you need to copy a sqljdbc_auth.dll file. and maybe also put non-blank info in the User and Password fields.
These are probably not up-to-date with versions, but try this approach and let us know!