I have a customer using Microsoft 365 and has two folders in OneDrive for Business that he what to share. When trying to share, we get the error message "The attempted operation is prohibited because it exceeds the list view threshold." I have confirmed he is in Modern View which based on my research typically resolves this issue. Another possible resolution is to break down the subfolders into less than 5000 items however does that mean if we break down to lets say 10 subfolders, do we have to share each of the 10 folders or can we share the root folder? Any other ideas I can try?