Cannot enable OneDrive 'Camera Upload'

Had the same issue on Samsung S10 and solved it.

Turned off sync photos via the Samsung account.

The same issue that OneDrive setting is greyed out and doesn't turn on.

Went to Settings>Accounts and backup>Accounts

Select your OneDrive account and turn on Media Sync. That seemed to turn on photo sync in the OneDrive app.

The problem with this solution is that Media Sync defaults to turning itself off for some reason and therefore this does not work long term.

There is NO camera upload!!!! Please see 4 attachments! Some sync but not all and the numbers change everyday and files move around....I HATE ONEDRIVE

My media sync shows on but the numbers NOR folders match-up. I've deleted folders and let it add again, deleted Microsoft account and added back, made backup folders to see what happens with them AND I've come back to find photos moves around and put back after I've deleted. 

Also, sync doesn't stay syncing, says can't sync and sometimes it says sync complete and will show a date more than a month ago.  

I HATE ONEDRIVE!!!

Jamie

I understand your frustration Jamie S Reich, but I have to admit that I love OneDrive.

The issue we are discussing here must have something to do with Samsung's system and its relationship with OneDrive. Samsung Gallery will now back-up ALL of your photos to OneDrive and these photos can be seen in the folder marked Samsung Gallery in OneDrive. However it means that Camera Upload button will disappear.

Media Sync for some reason will not stay on and so only works for a short time but this is nothing to do with OneDrive it must be to do with the Android system or maybe Samsung.

So in summary, all photos rather than just new ones will automatically be backed up to OneDrive and appear in the Samsung Gallery folder in OneDrive. The other difference is that when you delete photos from Samsung Gallery they will also be deleted on your phone, this was not the case before with Camera Upload. So in short, we have the same facility as before, which some would argue is better, it just means that things work slightly differently.

Dude .. the issue is not OneDrive.  The issue is Samsung.  If you activate the Samsung backup service for photos it removes OneDrive's upload and the ability to turn it on.  (Technically Samsung is now doing a backup to the Samsung folder in OneDrive, so having OneDrive do the same is just creating redundant files).

Solution is don't activate Samsung Gallery..  Turn it off and on the Microsoft account page revoke access to it, and the option to upload photos in OneDrive settings will reappear.  Right near the top of the settings.  PITA to find the issue, easy to fix.