To avoid errors with uploading or downloading files with special characters on OneDrive, here are some things to try:
- Ensure that the filename does not have any unsupported characters, such as &, #, or %.
- If the file has been renamed on your computer, ensure that the filename does not exceed 150 characters.
- Ensure that the path of the file is valid, with no more than 400 characters.
- Verify that the file has the correct file extension.
- Empty the recycle bin on your OneDrive before attempting to upload or download a file with special characters.