The availability of a OneDrive file or folder can be changed both from File Explorer and the OneDrive app.
From the OneDrive folder in File Explorer, go to the file or folder you want to change and right-click on it.
Select one of the following options:
- Make available offline - if the file's availability is currently set as online-only.
- Make online-only - if the file's availability is currently set as available offline.
In the OneDrive app, right click or press and hold the desired file or folder. A contextual menu is shown on the bottom. Press "Make available offline" or "Make online-only" and confirm your choice, in order to change its availability.
OneDrive will change the availability of the selected item.