A Microsoft file hosting and synchronization service.
Please let your leadership know that Microsoft will lose customers due to this issue. This same problem manifest itself on my computer today (March 1, 2025) and it's clearly been an issue for a very long time. Since it has not been fixed I'll be migrating my files to a different cloud storage provider, probably Google, and will happily pay more for it. At some point in the near future I'll be canceling my office subscription since I won't need it any more.