Failed to open a connection to the device (-21345) when using Image Capture

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Level 1

20 points

Failed to open a connection to the device (-21345) when using Image Capture

Hi,

I have a Canon printer/scanner (which has been working normally) when I now try to scan via Printers and Scanners comes back with the above message (see attached image). I uninstalled and reinstalled the printer, restarted the iMAC 24, and still get the same message. When printing from the iMac - all works well.

The printer/scanner works normally via the canon app on my iPad, so looking for some inspiration on how to fix this?

iMac 24″, macOS 15.0

Posted on Oct 23, 2024 3:14 AM

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Answer 1

Old Toad

Level 10

210,615 points

Nov 25, 2024 2:25 PM in response to Repurr

It's not a fix "fix" but download and try the demo version of VueScan and see if it will scan successfully. I find it to be far better than the apps that came with my Canon and then Epson scanners.

Just some food for thought.

Have you installed and run any "cleaning", "optimizing", "speed-up", anti-virus or VPN apps on your Mac?

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Answer 2

Nov 25, 2024 2:54 PM in response to Repurr

Always state the device that is not functioning properly as otherwise, you prevent us from further diagnostics such as if you need a current Canon ICA driver purposely compiled for the specific (anonymous) operating system on your iMac, if Canon no longer supports the device, or even if VueScan Professional supports your device (without an existing vendor driver present).

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Answer 3

Nov 25, 2024 4:52 PM in response to Edward Kulakowski

Interestingly the HP Smart app does connect with the scanner. I have no apps like malware, optimizing, VPN, or antivirus installed. Configuration is 14" MacBook pro M3, Sequoia 15.1.1 (24B91). Seems like image scan has failed after update to Sequoia 15.1.1. Image scan worked fine previously.

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Answer 4

Nov 25, 2024 11:27 AM in response to Repurr

I have the same issue with an HP 8710.

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