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ImageCLASS MF644Cdw: Can print but cannot scan (MacOS 15.1)

wilberfan
Apprentice

Neither Image Capture nor the Canon Scan Utility (v1.10.17) can communicate with the scanner.  

"Cannot communicate with the scanner  Error code: 600104"

"Cannot communicate with any of the scanners. The scanners may not be connected, or may be turned off."

  • I've updated the firmware and all available drivers
  • I've done a factory reset on the printer
  • I've deleted and re-added the printer multiple times
  • I've connected to the network (successfully) with via both Wi-Fi and USB
  • I am able to print without issue.
  • I can retrieve printer supplies and open the 'printer page' via a web browser.
  • I cannot scan from computer > Scanner nor Scanner > Computer (via the touchscreen menu)

I've run out of ideas... 

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