Being unable to attach a file to your fax message may be caused by a number of factors.
When sending a fax through email
Check the following:
• Corrupt file - The document may be corrupt. Try sending another file or make a text document in Notepad, save it, and then attach the test file.
• Unsupported file type - Make sure that the file type is a supported file attachment for faxes.
• File size too large - The attachment may have exceeded the 20MB limit. Try sending a smaller file size.
• Special characters - The filename of your fax attachments should not include ampersands (e.g. &) or other special characters for you to able to send it.
When sending a fax using the Softphone
If you are unable to attach any file type from the Softphone, try uninstalling and reinstalling the Softphone.