On XP everything was fine. On win 7 I had a problem with MF Toolbox and had to use system scan dialog instead. On win 10 neither works. When I try to open Toolbox, it alerts "A supported scanner is not installed". Trying to launch system scan simply does nothing.
I installed and uninstalled the drivers several times. In the device manager all the devices are listed as correctly installed.
One weird peculiarity. As I first install the drivers, scan through system dialog works only until next reboot. Next time I turn on the computer, it no more works.
I tried contacting Canon support (Russia) 3 months ago. They answered they needed time to investigate the issue. No reply since.