TeX Live and MacTeX ⇒ Hyphenation (German) Not Working After Installation

[geistdeswaldes]

Thank you very much for your help and thank you very much for that advice of Ulrike Fisher.

I indeed have had a pdflatex.fmt file in the local .texlive2016 tree that wasn't affected by the fmtutil-sys command of the installer and had to manually execute fmtutil --no-strict --byengine=pdftex to solve this problem.

All installed languages are now recognized by babel.