Canon MG5750 scanner

Question

Nicolas Wu Author

Level 1

8 points

Canon MG5750 scanner

I have upgraded to Big Sur 11.5.1, and now my Canon MG5750 will no longer scan. It used to work before the upgrade.

I go to this window:

Then, if I click "Open Scanner...", the message I get is:

You do not have permission to open the application “Canon IJScanner15f”.

Followed by the following window with the message:

Failed to open a connection to the device (-21345)

I have tried the following:

In Printers & Scanners, I have done "Reset printing system...", and restarted my machine.
I have updated the drivers from Canon for the printer using "MG5700 series CUPS Printer Driver Ver. 16.40.1.0 (Mac)"
I have updated the drivers from Canon for the scanner using "IJ Scan Utility Lite Ver.3.3.1 (Mac)"
I have tried reinstalling the printer using the "Canon MG5700 series" under "Bonjour Multifunct", and have tried all three options "Secure Airprint", "Airprint", and "Canon MG5700 series".

None of the above makes any difference, the message is the same permissions error.

Posted on Aug 12, 2021 7:45 AM

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Answer 1

Top-ranking reply

Jan Hedlund

Level 7

23,419 points

Aug 12, 2021 8:43 AM in response to Nicolas Wu

Hi,

Camp_mother mentioned a solution for Canon in https://discussions.apple.com/thread/253010503?answerId=255650000022#255650000022 . Would something like that possibly change anything with your scanner? Power cycling the devices involved may also be worth testing.

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Answer 2

Nicolas Wu Author

Level 1

8 points

Aug 12, 2021 8:00 AM in response to jurup

Thanks for replying!

The thread above recommends installing this driver:

ICA Driver Ver.4.1.3a (Mac)

Unfortunately installing this and going through the procedure of removing the printer and installing it in all of the above options does not change anything.

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Answer 3

Nicolas Wu Author

Level 1

8 points

Aug 12, 2021 9:10 AM in response to Jan Hedlund

Perfect, thank you! The instructions at that URL are to go to:

Macintosh HD / Library / Image Capture / Devices

Then, Control-click or right-click CanonIJScanner15f and click "Open". After this, the printer installed with "Bonjour Multifunct" and "Secure Airprint" worked just fine.

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