Office365 Upload Center Changes
On September 17th, Microsoft Office announced that the Uploads Center used by Office365 users would be retired. In the past, users have been able to access files that did not upload properly in the Uploads Center; now, these files will be accessed by clicking the File tab, then Open, then Files Needing Attention.
The Uploads Center will be phased out starting in October and will be completely gone in December.
For more information and frequently asked questions, please see this Microsoft Files Needing Attention FAQ.