''Herrwerkbank64 [[#question-1253393|said]]'' <blockquote> hab leider keine details </blockquote> Hello Herrwerkbank64, It would be helpful though if you could tell us ''where'' you can't change the language ..... There are a few things I can think of : Options (or Tools) => General => under "Language" - is it there that you can't change the language ? Your search engine - I don't know what your search engine is, but have you checked its langage settings ? Last, but not least - have you downloaded Firefox in your preferred language from here : www.mozilla.org/firefox/all ?