A Microsoft file hosting and synchronization service.
After a couple weeks of this issue, mine has started working again. OneDrive still contains those extra folders that were added when this problem came up. And they contain literally thousands of files in a folder that came from the computers sharing their folders. I'm not sure how or why it has started working again. I am hesitant to delete those new folders even though they are taking up considerable OneDrive space. Overall I am very disappointed in how Microsoft has addressed this issue with absolutely no correspondence explaining how or why this issue persists. Makes me very skeptical of relying on OneDrive ever again. I will for sure be looking at alternate storage solutions.