XeLaTex - fontawesome: compiles without errors, but doesn't show symbols

I have trouble using fontawesome symbols with XeLaTex. Set up MikTex 2.9 on Windows 8.1 from scratch. Fontawesome installed properly. When I try to use fontawesome symbols with XeLaTex I don't get any errors or warnings, but the symbols simply don't show up in my document. Using LuaLaTex everything is fine.

Example code:

\documentclass{article}
\usepackage{fontawesome}
\begin{document}
\end{document}


LuaLaTex: compiles with no errors or warnings to

XeLaTex: compiles with no errors or warnings to

To make sure, that there are no problems with the management of local fonts I tried to use a locally installed otf as follows:

\documentclass{article}
\usepackage{fontspec}
\usepackage{fontawesome}
\begin{document}
\end{document}


This way XeLateX is using the correct locally installed font, but it is still not showing the fontawesome symbols. Everything is alright with LuaLaTex.

Tried to re-install the fontawesome package, resfresh FNDB, update formats. Had a look at font.conf. All of it to no avail...

Am I missing something?

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