Since I installed PPT 2016, I can no longer control the volume through my laptop on my youtube embedded videos on my PPT slides. I can adjust from my speaker knob and from the volume display on the video itself, but not from my laptop's volume buttons. I have a Dell Lattitude E5440 laptop running Windows 7 projecting to an Epson Brightlink 595 WI short throw projector. Nothing is out of the ordinary; the volume buttons work fine in other application and programs; and I never had this problem in PPT 2007.
Maybe a display or viewing setting I'm not aware of? Can't find anything of the sort through PPT's help menu.