Hi
Have you looked at this article, it has a registry hack that both removes One Drive and Restores it.
How to Disable OneDrive and Remove It From File Explorer on Windows 10
Perhaps if you ran the remove hack and then the restore hack it would get it working again.
Mike
Hi Mike, thanks for taking the time to pursue this for me. Trouble is, I don't get the Onedrive icon in the system tray, not even when I look in hidden icons, nor is it listed in customise which icons to show. Nor is it listed in File Explorer.
If I search for OneDrive, there are a whole bunch of files, mainly dll's which I won't touch. There is no uninstall.exe anywhere either.
I did write to IOBit who make Advanced Systen Care and they said that there is no way to get it back so I pointed out it shouldn't be in their list of programs to be uninstalled if it isn't being uninstalled. They must have known that it is integral to Win 10. They replied saying that they will pass my comments on to their s/w team who will look closely at this!
I think I will just stop worrying about this. I use iDrive cloud which is way better than OneDrive anyway. I only wanted to use OD after I bought a Windows phone and I could have managed both devices and OneDrive. I found a standalone app calle Music Player which is way better than the rubbish like X-Box and the other integrated player on the phone which wouldn't even play most of my music, it just errored all the time.
So I thank you fro your efforts, and those others who have offered help. I shall leave OneDRive until I ever need to do a reset.
Mike