OneDrive and Sharepoint - Prohibited File and Folder Names

Invalid characters

Characters that aren't allowed in file and folder names in OneDrive for Business or SharePoint:

~ " # % & * : < > ? / \ { | }.

Invalid file or folder names

These names aren't allowed for files or folders:

.lock, CON, PRN, AUX, NUL, COM0 - COM9, LPT0 - LPT9, _vti_, desktop.ini, any file or folder name starting with ~$.

"_vti_" cannot appear anywhere in a file name
"forms" isn't allowed as a folder name. But folder names such as "forms_" or "forms 1" are permitted
You can’t create a folder name in SharePoint Online that begins with a tilde (~).
Folder names can't end in "_files". If you are try to create a folder with name ending with _files, SharePoint does not allow the folder to be created (e.g., Vendor_files, Customer_files etc.). As a work around, add any valid character to the end of the folder name (E.g., “vendor_files” can be created as “vendor_files-1”).
Outlook .pst files can not be saved to sharepoint

Article ID: 8, Created: 11/28/2019 at 12:04 AM, Modified: 1/13/2021 at 3:03 PM