Problems Synchonizing Other Peoples File With Microsoft OneDrive

If you're having issues syncronizing other people's files using OneDrive, you must create a shortcut in My Files on the OneDrive web client in order it to appear on the desktop client.

See: https://support.microsoft.com/en-us/office/add-shortcuts-to-shared-folders-in-onedrive-d66b1347-99b7-4470-9360-ffc048d35a33