11-03-2019 04:15 PM
After update to OS X Catalina, MF229dw scanner does not work.,,
Canon MF Scan Utility.app says, "No scanner found"
Scanner access from System Preferences > Printers & Scanners says,
"The operation couldn't be completed. (com.apple.imagecapture error 4294957375.) (-9921)"
11-04-2019 09:46 AM - edited 11-04-2019 09:48 AM
What might help. Remove the printer and uninstall all Canon related software and drivers.
Now install Catalina Specific Drivers for your device.
Apple's decision to stop supporting 32bit Applications is the cause for this.
06-25-2020 03:54 AM - edited 06-25-2020 04:09 AM
After installing the new drivers, a connection error appears when trying to open the scanner:
Failed to open a connection to the device (-21345)