Would anyone be able to confirm what the restrictions are for SharePoint Online as it seems to be ever changing. Is there a page anywhere which I can refer to as I have seen mixed reports.
This still seems valid " * : < > ? / \ | But you can create a folder with ~ at the start in the UI I can create all of the folders listed under Invalid file or folder names
Any pointers in the right direction would be much appreciated. Is there a page I can take as the definitive resource for this?
Also, you can create a folder via CSOM with a . at the start ie .Folder. But in the UI you can't.