Why Is My Hp Printer Not Printing Double Sided?

[cadegof645]

Hp Printer Not Printing Double Sided what used to happen is when I selected two sides a popup would appear with instructions telling me to re-insert the paper that just printed and press Resume. That popup no longer appears. Instead, the printer eventually comes up with an error message saying out of paper. When I press clear that goes away and printing resets. The second page is lost but I can print other stuff. (one-sided only) Happens with MS Office and Adobe Reader.