This is a mystery for me and apparently my company's IT dept. I have access as a collaborator on Keynote presentations stored in Box. I can edit on Box using the "Keynote on the Web" (browser) option. And I can open it in "Keynote for Mac" desktop app option.
However, desktop Keynote does not allow me to collaborate: The collaborate button is grayed out, and I repeatedly get this message about iCloud. My company does not allow us to use iCloud, it's been disabled on all computers, and I've confirmed that I am signed out of iCloud (even on my personal computer).
Any help would be greatly appreciated, as I need to be able to use the desktop version of Keynote—withe more capabilities than the browser version.
