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MG7720 won't scan


I can't seem to get my MG7720 to scan. It's on a wireless network, and printing works fine, but my computer/network can't seem to find the scanner. I've tried to use the IJ Scan Utility in the Canon Utilities folder but again with no success. I've got a Mac running El Capitain 10.11.6, and I've downloaded the latest firmware.


Product Expert
Product Expert



What error occurs when you are unable to scan with the IJ Scan Utility program?


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Error occurred while communicating with scanner (-9923)

Product Expert
Product Expert

HI wdv,


Please try reinstalling your PIXMA MG7720.  To uninstall your PIXMA MG7720, please follow these steps:


 1.  Click on the Apple in the upper left hand corner and then System Preferences.


 2.  Click on Printers and Scanners.


 3.  Click once on the PIXMA MG7720 and click the "-" button at the bottom of the list.


 4.  Repeat until all are removed from the list.


Once done, please follow these steps to reinstall:


 1.  Visit Canon's website at:


 2.  Type PIXMA MG7720 in the "Enter a Model" box and click GO.


 3.  Under Drivers, please click the Select button next to the MG7700 series Full Driver & Software Package (OS X).


 4.  Click on the Download button.  The file will be downloaded.


 5.  Please open the Downloads folder.


 6.  Double click [mac-mg7700-1_1-mcd.dmg].  A new disk image will be created.


 7.  Doiuble click the new disk image to begin the installation process.


To view the wireless installation process, please use the following link:


Once reinstalled, please attempt to scan.


If you continue to have difficulties, please contact our support group using the following link:

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