A Microsoft file hosting and synchronization service.
Hi, yes of course!
Actually, when I installed the Dropbox app on my MacBook the app notified me of this issue and also provides information how to solve it. It's easy.
Log in to your web dropbox account (not in the app but on internet) and go to "Settings" (under your initial icon, top right corner).
Scroll down to Preferences, here you will find at the bottom the preference "Smart Sync Update for Mac". Toggle this on. And you are all set.
I moved my biggest files now to Dropbox, some smaller ones are still in OneDrive. When I open " About this Mac" and "Storage" and then "Manage" I can still see that under documents there are some documents taking up space. These are all OneDrive documents which are not stored offline. So it is really, really OneDrive that is not solving this issue.
Good luck with it!