You must do this each time Firefox Updates!
Navigate to C:\Program Files\Mozilla Firefox\res\fonts\
Open folder "
fontEncoding.properties
" in Notepad
Near the top of the file, copy and paste the following under
# Symbol font:
encoding.symbol.ttf = windows-1252 encoding.wingdings.ttf = windows-1252 encoding.wingdings2.ttf = windows-1252 encoding.wingdings3.ttf = windows-1252 encoding.webdings.ttf = windows-1252
Overwrite/remove
encoding.symbol.ttf = Adobe-Symbol-Encoding
Hit Ctrl-S to save the file and restart Firefox.