Onedrive: Failed to copy: failed to open source object: unauthenticated: Unauthenticated

Thanks for the explanation. I am currently trying to get MS support to look into this, but so far I only get links to support pages with information. Actually years of photos are gone!!! Because of a folder name change by MS?

Does anyone know what kind of upgrades MS is actually doing and what type of changes? I would like to push back to them.