I am having problems with file permissions in Windows 10. I am using TeX Live 2020. PdfLaTeX/LuaLaTeX is unable to access files in my local texmf tree. I am getting the following error:

Process started: lualatex.exe -synctex=1 -interaction=nonstopmode "block1".tex

c:/texlive/texmf-local/tex/latex/ownsty/answers.sty: Permission denied

Process exited with error(s)

I can compile files that do not need access to my local texmf tree. I have checked my permissions. It seems OK to me.

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1 Answer 1


This was a problem with the 2020 installer, which has since been solved. The permission problems are with the files, not with the directories. Instructions for fixing texmf-local can be found at http://www.tug.org/texlive/windows.html

I repeat them here:

  • In File Explorer, right-click the texmf-local folder
  • Choose Properties
  • Select the Security tab
  • Click the Advanced button
  • Click the Change permissions button and deal with the resulting UAC prompt
  • There is no need to change anything in the box with Permission entries. Instead: Check the checkbox 'Replace all child object permission entries with inheritable permission entries from this object'
  • Finally, click the OK button and click Yes in the resulting Windows Security dialog.
  • -

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