After a lot of digging around, I solved my problem very simply.I discovered a relatively new driver at the very end of the list on page 2 of the driver section of the Canon support page for the MF724Cdw called '[Windows 32-bit & 64-bit] Patch for Net...
I also have the same problem on a MF724Cdw!Everything works fine on the unit except the scan function when operating from the machine control screen. I get the same 'Confirm Destination' loop - i.e I select the computer, press go, green light flashes...