Symantec removed all WinFax PRO related technical documents and files from their Web site and we’ve been receiving emails asking for the password to the WinFax Pro 10.04 update file. Symantec still has the file available for download with password details, you can download the file and password to unzip from here.
IMPORTANT that you must have an English version of WinFax PRO 10.03 before you can update to version 10.04. Do not update other versions.