This happened right after the Creative Cloud update a few days ago (June 8th 2015? plus/minus a day or two)
The desktop app displays the text "When you turn on file sync...." and underneath "to start saving files to creative cloud...." in the opening window as if it is off. none of the files or folders in windows explorer in the CC folder (with the red CC logo icon) have any of the green check icons indicating up to date or the ones indicating syncing. The main CC folder does have the shared folder look (the two person icon indicating it is shared).
In preferences in the desktop app i go to turn syncing on and it says it is on already.
tried restarting, moving the folder to a different location then back and clicking off in preferences for file syncing and then on again...nothing helps.