A Microsoft file hosting and synchronization service.
The only thing that has worked for me is using the Edge browser. Of course, if you aren't on a Windows machine, that won't help you. Even on a Win PC, it's super annoying to have to use Edge for OneDrive to function properly.
Just learned Microsoft bleeps with *s a commonly used word that is not even a cuss word and it actually made it look like I used a much worse word, so I have edited my comment to "super annoying" instead of "annoying as..." a common word that is used for fecal matter that starts with "c."
This was the fix for me. Really not cool this site can't play well with others. Microsoft programs have this thing where they always think they're right about stuff.