MiKTeX (on windows) stopped working. It gives this message: "Conversion from UTF-8 byte sequence to wide character string did not succeed." launching the wizards.

  • 1
    Welcome to TeX. Can you show us the code resulting in your error?
    – Mensch
    Aug 26, 2017 at 23:42
  • Thanks. It gives me the error even by launching the MikTeX wizards. And of course, not even a basic code can be compiled.
    – Danial
    Aug 26, 2017 at 23:47
  • possible relation with this: tex.stackexchange.com/questions/287923/… (may be some characters outside US-ASCII (such as ä,ü,ö) ) or something similar. Delete aux files of that project before open MiKTeX.
    – koleygr
    Aug 27, 2017 at 1:10
  • Another think to try is \usepackage[T1]{fontenc} and \usepackage{textcomp} that have solved similar problems
    – koleygr
    Aug 27, 2017 at 1:12
  • It didn't help. Excuse my ignorance, but I don's see how aux files may prevent MikTeX wizards from launching!
    – Danial
    Aug 27, 2017 at 9:49

1 Answer 1


I don't understand the origin of this problem, but it also happens to me from time to time. I know it is not related to any package issue or any input characters because the error message appears the moment I hit the "compile" button.

Every time, the problem disappears when restarting Windows.

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