If you use ctrl + P to print, a dialogue box should offer you a method of printing from a drop-down menu, you may have to click more printing options to switch between print to file or using your USB or network printer.
Are you using a client for checking your mail or are you visiting a website, and what web browser are you using.
Jerry, this helped me when I was having the same problem. I can’t reproduce it now but sure enough “print to file” was checked! This is all I can tell you though.
What should I do if Acrobat Reader DC is asking to save a file when a document is printed?
In case Acrobat Reader DC is prompting to save a file when you click Print, then click Advanced print dialog and deselect the Print to File option.