Package inputenc Error: Keyboard character used is undefined (inputenc) in inputencoding 'UTF-8' [closed]

I have document in Latex. Every compile worked without errors. But now, I reinstalled my Windows 10, and the same document not working. I didn't change anything on document and now I have these Errors in Latex file pdfx.sty

on this line error:

I'm using Tex Live and text editor TexnicCenter. (Sorry for my English)

closed as unclear what you're asking by Kurt, user31729, user36296, Zarko, egregJul 27 '17 at 23:00

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

• Welcome to the site! I suggest you make a copy of your document and try to reduce it so far that everything that does not have anything to do with your problem is deleted and then provide this MWE to us. This way we can help you better. – Enno Oct 14 '16 at 13:13