Some users are unable to change printer properties. They get a splwow64.exe error. "Some or all property pages(s) may not be displayed". This is only with Xerox printers, not Canon or HP.
Thank you for using the Support Forum. Please take a look at this post especially the last two replies. Disabling the Client Side Rendering seems to work for the majority of people that see this error. Please consider contacting your support centre for further assistance.
Sounds like you have tried everything already, so it would be an escalation: 1-800-821-2797 or 1-800-835-6100