Hello coeurdubois,
If the option is greyed out, you may need to enable the option at he driver. HERE are the steps.
I have recently installed a C500DN on my home office PC. This was prevously working perfectly satisfactorily on my office network. It prints perfectly well but I cannot set it to print double-sided. The option is 'greyed-out' in the driver. The installation was carried out using the Xerox SmartStart utility via a USB connection (it had prevously been on the Ethernet at the office where it automatically performed double-sided prining faultlessly.) What am I doing wrong?
Solved! Go to Solution.