"You do not have permission to open the application “Canon IJScanner###"" After Installing the ICA Driver on macOS 11.5 (PIXMA / MAXIFY / CanoScan)

Article ID: ART180175 | Date published: 07/28/2021 | Date last updated: 08/12/2021


This article explains what to do if you see the error "You do not have permission to open the application “Canon IJScanner###" when scanning after installing the ICA driver for your scanner or multifunction printer on macOS 11.5.


Before Starting

 If your hard drive or solid state drive has a name other than Macintosh HD, substitute that in place of Macintosh HD in these instructions.

This article assumes that the Macintosh HD icon appears on your desktop. If this icon is not on your desktop, select Preferences from the Finder menu:

Select Preferences...

Place a check in the box for Hard disks.

Place a check in the box for Hard disks (outlined in red)

If you don't want to have the Macintosh HD icon on your desktop, you can also find Macintosh HD by selecting Computer from the Go menu in Finder.

Select Computer from the Go menu in Finder

Macintosh HD listing

Troubleshooting Steps

If you receive an error similar to the one shown here after attempting to scan in macOS 11.5:

Example of error message when attempting to scan

Follow these steps to resolve the error.

  1. In the Finder, navigate to Macintosh HD / Library / Image Capture / Devices

  2. Control-click or right-click CanonIJScanner### (where ### represents alphanumeric characters), then select Open from the menu.

    Select Open from the menu

  3. Attempt scanning again.

If your product issue was not resolved after following the steps above, or if you require additional help, please create or log in to your Canon Account to see your technical support options.

Or if you still need help, visit our Canon Community by clicking the button below to get answers:

Link to Canon Community Forum


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