Hi @ALBERTO CARIBÉ
I'm responsible for Reporting Services related issues and probably don't know much about print setup.
I have some details to know.
Is the original language of the text you add to your report Portuguese? What language is in Windows Server 2016 preview? Is there a language issue only when printing or is there a problem with the report preview? Is your Windows Server 2016 operating system language Portuguese? If not, try setting Portuguese as the operating system language.
Best regards,
Aniya