A Microsoft file hosting and synchronization service.
Had this problem after switching phones, and I managed to enable camera upload without removing my samsung account.
This is what worked for me:
Go to settings> Accounts and Backup> Accounts> Onedrive (this shows your connected email)> Sync Account> enable the ticker for Media Storage
I still have all my accounts connected and camera upload is finally back. :)
You Sir are a genius. I was using the other solution, but then of course I lost the Samsung Gallery on OneDrive, but your solution is even better because both Camera Upload and Samsung Gallery on One Drive both work!
This is the proper solution!!!!