full screen on my secondary monitor

[danny klim]

Hi,



I’m trying to make a youtube video go full screen on my secondary monitor, but it won’t work- it always switches to go full screen on my main iMac screen (and/or sometimes makes the other screen black and unusable). Could you please help?


Its not just youtube either- I just tried it with an Evernote window and it made it full screen on the secondary monitor, but it made the iMac screen completely black. Happens with all applications I think. I’ve searched online and it seems a lot of people have had this issue, but I can’t find a fix. How can I make full screen work right on second monitor?



Thanks, Dan



Specs:


OS : 10.12.6 (16G29)


iMac (Retina 5K, 27-inch, Late 2015)

 

[MacGizmo]

You have to move the main window of the app to the second screen BEFORE going into full screen mode.

 

[danny klim]

You have to move the main window of the app to the second screen BEFORE going into full screen mode.

Thank you, i just tried again and made sure to move the main window of the app to the second screen before going into full screen mode and am encountering the same kind of erros