Assume that you install a non-English version of SQL Server 2016 by using the graphical user interface. You also use the Product Update feature to perform a slipstreamed install with RTM + GDR update. In this situation, when you run Setup again, for example, to add features, the display language of the landing page changes to English.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 3168257 - Last Review: Jul 26, 2016 - Revision: 1