MiKTeX portable fontconfig file location configuration

Question

I moved MiKTeX portable to another directory, and after that there are issues with loading fontconfig. Specifically, when compiling with xelatex, fontconfig cannot be loaded. Its location is apparently pointing to the original location OLDLOCATION.

Where does MiKTeX keep such information?

(CURRENTLOCATION\tex\latex\fontspec\fontspec-xetex.sty
(CURRENTLOCATION\tex\latex\base\fontenc.sty (CURRENTLOCATION\tex\latex\euenc\eu1enc.def)
(CURRENTLOCATION\tex\latex\euenc\eu1lmr.fd)Fontconfig error: Cannot load config file "
OLDLOCATION/fontconfig/config/localfonts.conf"
Fontconfig error: Cannot load default config file
)

Answer 1

I don't have the portable version. But in my miktex the fonts.conf in <Root UserConfig>/fontconfig/config contains explicit pathes. You should also check localfonts.conf and localfonts2.conf.