My Canon LIDE 600F scanner is old but still worked very well. When I upgraded to OS 10.11 my computer no longer recognized the scanner. Canon has officially stated that they are not making new drivers for this product, but I had a similar issue with my tablet not working and was able to find a solution on this site. Does anyone know of a workaround?
VueScan might help. Honestly, you're better off buying a new AIO then trying to get these older machines working. You can also try deleting anything related to this Canon scanner that's on your Mac then checking if Preview will recognize it. I was reading here that some people had a limited amount of success doing that.
I have used ScanVue on Mac OS X, both the 32 and 64 bit versions with no problems. As far as the LiDE 600F (my scanner) is concerned, there is no 32 bit support on Mac OS anymore. And the ScanVue developer cannot get access to the 64 bit drivers for this device (if they even exist). It was always a good scanner and I would like to keep using it. Unfortunately it is not possible unless Canon releases the drivers code and someone converts it to 64 bit. Just a paperweight now. :(