A Microsoft file hosting and synchronization service.
This just happened to my brother and I came to the forums to see if more people have been having this issue, I won't trust any OneDrive or Microsoft service since first it tries to trick you into syncing your whole Home Folder on OneDrive which is very inconvenient in the first place and second we can't even rely on a simple bisync feature that just needs to check on modification time to do a good job, I'll tell my brother to start saving everything local and our trust on microsoft products is now gone, thanks for nothing. This is the reason I've been on linux for 4+ years now
My older files keep copying over new data. new save date. I agree that OneDrive is preferencing one computer over another not based on date. so old data is being copied over newer data newer saved files. it keeps happening over and over renaming. the file doesn't seem to work either
This just happened to me but just with 1 .xls file. I update it on my Android phone nearly every day. Yesterday all was OK. Today it just reverted to a version from about 3 months ago.
Both the onedrive and local copies are the same. The onedrive history shows lots of versions dating back several months, but every one of them has the identical 3 month old content.
The file is not in the recycle bin.
Loads of work needed to get it back to where it should be.