When I use Microsoft Office Document Imaging, all or part of the fax is shown as a black line.

The error can be caused by the sender's fax machine.

We always send faxes as TIFF images, but some do not open correctly with "Microsoft Office Document Imaging".

If this is the case, we suggest opening the fax with a different application, "Microsoft Imaging". After saving the TIFF image, open it with “Open with -> Imaging”.