Certain files and folders are not synching to OneDrive Personal using ECHO.


OneDrive will not sync files that contain invalid file or folder names which contain invalid characters, reserved words, or sequence of characters.


Rename the files or folders to conform with Microsoft's requirements on valid file and folder names.

More Information:

For a list of invalid characters, reserved words or sequence of characters, please refer to the article: Invalid file names and file types in OneDrive, OneDrive for Business, and SharePoint