I have just downloaded MikTeX Portable, installed the latest Babel package on-the-fly (with this strange arabi package), and still got a hyphenation error with Hungarian Babel:
\documentclass[12pt]{article}
\usepackage[margin=2.5cm]{geometry}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[magyar]{babel}
\begin{document}
Kipróbáljuk, hogy működik-e az elválasztás hosszú szavaknál: megszentségteleníthetetlenségeskedéseitekért.
\end{document}
Package magyar.ldf Warning: All Hungarian hyphenation= patterns missing. To make LaTeX hyphenate Hungarian words, please modify language.dat and rerun initex or texconfig.
I'm using Windows 10 and TeXnicCenter 2.02 if that matters. Do you have any ideas how may I solve it? Thank you in advance!