We're having an issue with a Windows Server 2008 server hosting a fax service not being able to fax in a very specific situation. One computer is unable to fax multi page sales orders generated from Microsoft Navision (now called Microsoft Dynamics). Single page sales orders, all other options within Navision, and other programs all fax fine from this computer. The same user is able to fax from other computers fine, and other users are not able to fax from this user's computer so it is specific to this computer.
They way the fax server normally works is the user prints to a shared fax printer that is on the fax server, which generates a TIFF file on the local computer in a temp directory, and then the fax software on the computer sends it out via the fax server (the fax joins a queue if the modems are busy).
When the problem occurs, however, the Fax doesn't join the queue and there are no errors. There is a preview function before the fax is sent so you can see the fax (TIFF image) using the windows picture viewer. When the fax fails, the preview always shows as cannot display image (or something to that effect). If I go to the directory where the image is stored, I can see information in the file is missing that show on faxes that succeeded (notably, the image resolution). I know this is the case when an image file is somehow corrupted as well.
The question is why does this specific computer have an issue with multi page sales orders from Navision with single page sales orders and everything else faxes fine and the same functions work fine on other computers?
All client computers are Windows XP. I have tried reinstalling both Navision and the fax printer/software on the local computer.