I've never had to do anything to Firefox to print and I see no obvious setting for print issues. Normally, all printing is handled by Wind 10. I've using an HP desktop PC with Win10 and printing to the printer is wireless. Have never had problems before. Anything change? What I do now is "print" to a .pdf app and then have to load the .pdf in Adobe. Firefox wants to open my generated pdfs in Firefox..which it never used to (and that's another issue). I have to open, as stated, in Adobe, and then print. Suggestions? Regards, Ron Wignes [email removed from public]