editing docs with embedded fonts

[charles thiesen]

Recently when I send word documents to my clients they are unable to edit
them, getting an error that says they contain "read only embedded fonts."

I've embedded fonts in documents forever but never run into this problem
before. Can someone tell me what's going on? Is there a solution to this?

Is there a way for me to tell which fonts I may need to change to clear
this up?

Thanks in advance,
- charles