Naming Files on OneDrive and SharePoint

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Last updated: Jun 05, 2023 by Dan Jakubiak
1 min read

File Types Allowed in OneDrive and SharePoint

All file types are allowed to be saved to OneDrive for Business on Office 365. There are no invalid files types of files or file extensions. However, there are restrictions to the names of files saved.

Invalid Characters for File and Folder Names

No filenames can contain: .lock, CON, PRN, AUX, NUL, COM0 - COM9, LPT0 - LPT9, _vti_, desktop.ini, or any filename starting with ~$.

File and folder names in OneDrive for Business on Office 365 cannot contain any of the following characters:

Name

Symbol

Name

Symbol

Quotation marks

“

Asterisk

*

Less than symbol

< 

Greater than symbol

> 

Question mark

?

Slash

/

Backslash

\

Vertical Bar

|

Paths for a document location that include the folder and file name cannot exceed more than 400 characters total.

To learn more about OneDrive and SharePoint file path limits, visit File Path Limit - OneDrive and SharePoint

Which data should be on OneDrive and SharePoint

Data supported by SharePoint

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