Hello
I noticed this today too. My issue was with my personal OneDrive - the one linked to my Microsoft Account. I do also subscribe to the Business Essentials package for Exchange / Teams / SharePoint etc. but that one has been fine.
I have a process for my photo library that goes like this:
- Shoot and edit the photos on my MacBook
- Move the RAW files onto an external 1tb disk.
- Using a tool called GoodSync I keep the folder structure of the external disk synchronised with a folder structure in my One Drive.
- When I import the files, they initially land on my Windows 10 PC and then of course sync up to OneDrive.
- I then make 4 more copies of the folder structure across other external disks (I like to be safe).
So, today I ran an import from the initial external disk as I had a few weeks of new photos.
- I noticed a pop-up on the Windows 10 PC stating that a large number of files had been recently deleted
- This was odd as the sync from the disk was for new files, nothing deleted.
- I took a look in the online recycle bin, and there were several thousand files in there, spanning several years of the folder structure.
- I checked, and the files were present on the external disk, I had not deleted them.
- I restored the files and am now re-downloading around 30gb back to my Windows 10 PC.
I am positive that I have not touched these files in years - the structure goes back 18 years and the deleted files were spread across that structure.
This smells like a bug in the OneDrive servers to me.