A Microsoft file hosting and synchronization service.
Hi Mirjam,
Thanks for posting here.
To confirm, you have enabledFiles On-Demand feature and most of the files in OneDrive have the first status(Online-only), right?
We have tested on Catalina, and the result matches your description. I think it is an identification issue between Mac Storage calculation and Files On-Demand. It most likely counts 172.298.589.945 bytes(172GB) into the whole storage, but if you right-click those files->info, it will show 0 bytes on disk, so we don't need to worry that the storage is being exceeded.
However, given the situation, you could also click the OneDrive icon on the upper-right corner and click more, then click Send Feedback and let OneDrive product team notice this behaviour, as Microsoft is committed to continuously improving your experience with our products.
If I misunderstand your meaning or you have any experience to share, please feel free to post back.
Have a nice day: )
Best regards,
Oliver