There are certain limitations for file name and folder name. The following characters are not supported.


Question Mark
Quotation Mark
Less than sign
Greater than sign
Vertical bar

With the limitation of Microsoft Windows,  those characters are not allowed when create, save, or rename a file, folder, or shortcut.

In macOS the characters are supported. However when such a file or folder being stored and shared via CacheDrive to Windows users, the file may not be processed / displayed correctly. 

Avoid using those characters in file/folder name in the cross-platform environment with multiple client operating system.