I have a Xerox 6250DP and duplex (two sided printing) was not working. I discovered that I had installed a generic driver and I had to configure the driver to my printer model. In Printer Properties, under the Configuration tab, I clicked Installable Options and changed the Printer Model. Hope this helps someone. I had a hard time finding an exact solution online. I have Windows 7 Pro, 64 bit.
Thank you for using the Support Forum. I appreciate you coming on to the forum to provide this solution! I have moved it to the printing board so that it might help more users.
I have the 6250 dp and I'm using win 7 64bit operating system. I installed the PPD driver from the Xerox web site, however I can't duplex and I don't see the configuration tab in the printer properties box. Any help would be greatly appreciated.