I have a C70 that the driver won't go onto the Windows 10 Machines from our 2008 server with the selected defaults. It switches back to the defaults that were defaulted originally on driver. However, on the server the new defaults I selected are still selected. I have tried the pcl6, ps printer specific and global. The V4 driver could not be installed on the server. This only happens with the Windows 10 machines. The Windows 7 machines are fine. Also, to release print jobs I sometimes have to reboot the c70 then the jobs will come through.