ONEDRIVE CANNOT CONNECT TO WINDOWS AFTER UPDATING TO WINDOWS 10 2004

Marvin Oco 

Try this fix :

https://techcommunity.microsoft.com/t5/windows-10/onedrive-issues-after-update-to-windows-10-2004/m-p/1481904/highlight/true#M3892

Hope it will help you and solve your issue regarding File On Demand not working.

Marvin Oco The thread at this link might help.

OneDrive issues after update to Windows 10 2004