I had the same issue, and after working with a terrific Canon tech, we found the problem (at least in my case).
We tried removing all Canon drivers and devices and re-installing, but it didn't help. It turned out I had some sort of TWAIN conflict (it's a scanner standard for remote scanning). What DID help:
- Go into your C: drive.
- Go into \Windows
- Look for the twain_32 or twain_64 folder (it was twain_32 in my case)
- Look for the folder that starts "MF741" or similar. It may or may not have a bunch of numbers after it.
- Delete or rename all folders that start with it (I had two).
- Re-install the drivers.
After that, I went into the MF_Scan utility and the checkbox was there. What I wanted was the Color and B/W options to be single-sided, and the Custom 1 and Custom 2 to be the same thing, but double-sided. It worked fine.
One other thing I liked: I turned off the date folder and aimed all scans to a single scan folder. I also changed everything to PDF to make it easier to file.
Hope this helps!
