Q: Split view not working for me

Just to confirm... you are holding down on the green button in the upper left of the window for at least a few seconds, right?

I have some apps that will go split screen when my MacBook Pro is connected to an external monitor, but not when just working on the laptop itself. I am getting the attached

I had to enable the System Preference > Mission Control > "Displays have separate Spaces" and to log off and on again.

Only then was it possible to swipe windows up to add them to separate spaces and to use them in split view.

Do the Apps you are trying to use in Split View have the different green button mentioned in the Split View Guide: Use two Mac apps side by side in Split View - Apple Support

Yes they work fine on my larger monitor but not when I am just working on the laptop alone without a monitor.

Most of the apps work fine and can be split-viewed for me.

In my case, a 150page image preview some how just won't corporate with ipages......

both apps works fine when combined with other apps like chrome or dictionary.......

since they are both apple apps.... I thinks this is a bug and needs to be patched immediately

solved! Thanks!

I had the same problem. I checked to make sure "Displays have separate spaces" was enabled in the Mission Control settings. I was. So I disabled it, logged out, logged back in, reenabled it, logged out, and when I logged in again it worked!

I had the same problem, but the posted solution worked to a point. I can activate split screen quickly and easily with my mouse. But not with my trackpad. Weird.

This is great to have a fix, but this whole thing illustrates a complete lack of design architecture and planning on Apple's part!  Who puts a supposedly "key" feature into a piece of software (it was one of the top 10 things touted for El Capt.), and then turns the fool thing off right out of the gate?  And then too, hides its On/Off control under "Spaces"?  What does Spaces have to do with Split screen Windows?  What Einstein thinks of such things?  And then too, this just multiplies of the folly of screwing up the Zoom button to begin with in the prior OS.  Everyone since Mac #1 has used the simple clean and elegant Zoom button to zoom the the window.  MS actually got it (almost) right by zooming to the full screen.  One click done.  Now I have to hold the stinking Option button down every time I want to just zoom a window!  What a Pain in the Butt!  And there is no way to change its behavior!  And if I miss the option key then I'm launched into an undesired max screen where I can't see anything else on my computer!  I RARELY want this behavior because I'm always working with multiple files in multiple folders back and forth.  Maybe some folks have too simplistic a life and they can afford the luxury (it it is even that) of working with only one file at a time.  Not power users and I also don't think "The Rest Of Us".  And then not all programs respect the new green button behavior, and then you got to Quit the stinking program to get out of that darn full screen mode.  And now Apple has overloaded that same poor *** green button with a third never intended mission of invoking split screen.  For crying out loud, how is that "simpler" like Ive always says he is wanting?  Simple would have been to simply add a forth BLUE button to do all this special full and split screen nonsense. And holding down the green button to get split screen now wastes more of my time!  Apple, trash this nonsense and do some real DESIGN work instead of just kludging stuff together trying cobble features together that don't work.  You might take a look at MS W10: they got split screen right!  This overloaded green button crap just shows lack of planning, organizing and lack of GUI design simplicity.  IMHO.

The separate space solution here didn't work for me. I didn't run into when using a larger display and now I know why. I noticed that some apps could be used in split view together while others couldn't. Then I realized that some apps have a minimum window width and if you tried to combine two apps who's minimum width took up more than half the screen the apps couldn't be placed side by side (not enough space). I have a rMBP so I turned the resolution all the way up and I could get the previously incompatible apps to enter split view mode together. Not a great long term solution for what I need but I think this is an individual app problem more so than a macOS problem.