I’m using Fork CMS and when uploading a file with special characters in the filename (e.g. é or à) the filename (présentation.pdf) is saved on the FTP as pr%c3%a9sentation.pdf.
When you link to the file using the back-end the URL is displayed as http://www.domain.com/files/pr%c3%a9sentation.pdf but almost all browsers link you to http://www.domain.com/files/présentation.pdf which results in a http 404 error.
Any suggestions on where I should be looking?
Try to access it like this : http://www.domaine.com/files/pr%25c3%25a9sentation.pdf
But you should remove accentued caracters from filenames before saving them, this will avoid you any issue.