I was looking forward to try the Publish Online tool. I remember seeing the button before but now it has disappeared.
I have tried File> Publish Online- not available either.
InDesign > Preferences > General > Preview Technologies > Publish Online button is un-ticked and I can't seem to be able to enable it.
Any ideas? I have tried using Advanced workspace, Typography, Book or Publishing but none of these work.
If you have an Enterprise or (maybe) Teams Creative Cloud account, that feature is not yet available.
If you have a normal Creative Cloud or InDesign CC subscription, you should have access. Go to the Creative Cloud desktop app (menu bar on Mac or task bar in Windows). Click the "gear" icon > Preferences > General > Sign Out from Creative Cloud. Then sign in again with your Adobe ID.
Thanks Steve! I had the same problem and your solution worked out fine.