I'm having a similar issue. My work files on OneDrive online all seem missing, but the folders and subfolders are still there, but without any contents.
While running OneDrive on the PC, it keep creating folders with name "DOCUME~1-[my computer name]-357" and counting upwards, ad infinitum. It starts at 357, and has just been creating more and more folders; it's now at "DOCUME~1-[my computer name]-1104"!!
and counting... And the modified dates are all identical: Tuesday, 3:43 AM. When I try and open any of these, it just tells me 'unavailable'.
I have the option to restore, but that would mean losing all the work I did today...
The files are not even visible on the OneDrive on-line Recycle Bin.
Update: when I go online into OneDrive and click the affected main folder however, I am able to select that folder and click 'download', and then it starts downloading a zip file (still downloading, 1.8 GB of word doc
files to give you an idea of the extent of data). I do hope there are actually files in it (knock on wood), at least the ones I'm unable to access. This would mean the files are there, but not visible for some reason.
We do use long file names at work, and I suspect this might be why OneDrive suddenly went haywire. Even so, this has never happened to me in DropBox, even with exceptionally long file names.
I've noticed on occasion that while using Office autosave, the file renames itself with "~" as a means to abbreviate it (I assume), but when I save and close the file, it appears again with the original name
in file explorer.
It's ironic, since I just decided to make the switch from all other cloud platforms and transfer it all to OneDrive, since it's native to the OS, and I figured that would guarantee better performance and tight integration
with all MS apps. Well, after this debacle, I am resubscribing to Dropbox Plus. Something fundamental is very wrong with OneDrive.