kernel32.Lib and msvcrt.lib (64-bit) no longer working

[coder]

I recently installed VStudio 2017 on a new PC. Then copied the said libs from their deeply-rooted locations (SDK, VC) to my code folder, just like I always did before. Now they fail at linking. (LNK2001 no printf something like that). I replaced them with the older versions of the said libs (msvcrt.lib, kernel32.lib), and they work just fine. What went wrong? The new msvcrt.lib is about 3MB in size though. Is it supposed to be that big?

Thanks for clarifications.