安装 LaTeX 时出现错误：cefpdflatex.exe 的权限被拒绝

Question

An error occurred:
  source file: Libraries\MiKTeX\Core\win\winFile.cpp
  source line: 686
  message: Permission denied: C:\Program Files\MiKTeX 2.9\miktex/bin/x64/cefpdflatex.exe
  info: C:\Program Files\MiKTeX 2.9\miktex/bin/x64/cefpdflatex.exe