I've recently started using siunitx and have a small problem with the letter µ. It does not seem to render properly and looks quite pixelated while the rest is perfectly fine.
Here's a MWE:
\documentclass{article}
\usepackage{siunitx}
\begin{document}
\SI{1}{\um}
\end{document}
That's what I get as a result:

Does anyone have an idea what might cause that?
μis pixellated because the compiler doen't find the postscript (vector) fonts, so it uses bitmap fonts (Type 3in postscript parlance). RunMiKTeX Console(Admin mode), and in theTasksmenu, selectRefresh font map filesto update the database of postscript fonts. – Bernard Sep 05 '18 at 22:10microis not the standard mu. It is an upright mu, with a small serif at the bottom. I don't know from which font it is taken. – Bernard Sep 05 '18 at 23:35\microsymbol is just the\textmuglyph fromtextcomp. – Bernard Sep 05 '18 at 23:49