Please tell the OS and Acrobat version you work on.
Also go through this link and see if that helps
Thanks for the reply. I am using Adobe Acrobat Reader DC (15.009.20079). Running Windows 10 Home 64-bit.
That thread you sent me to said I should delete the embeded font in my Acrobat. Is that what you recommend? If so, how do I go about doing that?
Thanks for your help.
This is just another thread with people having the same problem. The only solution given was a guy named Mike who said "Flushed the font cache (using Universal TYpe Client), the <Zapf Dingbats> false positive went away, made 9 new PDFs from troublesome files, and now they are good. The Zapf dingbats was the stars in a USDA symbol, and this all set off a chain of flase positive in Helvetica Neu, so I suspect my font chace had conflcit FOND ID numbers for those two fonts." I have absolutely no idea what this guy means, or how to do it myself.