Recently installed Acrobat 2020 and when left-clicking on an Excel document and clicking Convert to Adobe PDF, it is sending it to the Windows default printer, which is an acual printer. If I change the default printer to "Adobe PDF" then it will pop up the box to save it. Changing the Windows default printer back to the paper printer makes it sent it to the printer again. I am sure there is some setting I am overlooking. I tried this on another machine and it behaves as it should.