topic Re: Can't Scan With Canon LIDE 400 And Mac Sequoia in Scanners

Can't Scan With Canon LIDE 400 And Mac Sequoia

jwcfl — Tue, 21 Jan 2025 02:01:02 GMT

I'm running Mac OS Sequoia on an M3 iMac. I have a Canon LIDE 400 scanner connected. The scanner shows up in Image Capture, Canon IJ Scan Utility and is added in the printer list in System Settings. It looks connected in both programs. However, no scanning occurs.

In Image Capture, I get what is in this screenshot:

Just a tiny dotted square in the upper left. IJ Scan opens to this window:

Pressing any of the document, photo, custom buttons activates the scanning window briefly and then nothing happens. I am running version 4.1.2.

The scanner appears to be connected for both Image Capture and IJ scan yet nothing will scan. Thoughts? Thanks!

Re: Can't Scan With Canon LIDE 400 And Mac Sequoia

Patrick — Wed, 22 Jan 2025 16:40:15 GMT

Hi jwcfl,

Please disconnect the USB cable from your CanoScan LiDE 400 and then toggle the lock switch on the bottom of your scanner a few times, leaving it in the unlocked position.

Once done, please reconnect the USB cable and then attempt to scan.

If you are still unable to scan, it is recommended that you contact one of Canon's Technical Support Representatives via phone or chat. To contact a Technical Support Representative, please use the link below to log into your My Canon account:

https://mycanon.usa.canon.com

Once logged in, click on your CanoScan LiDE 400 and then click on the Product Support button. When that page loads, click on either the Phone Support button or the Chat Support button to access support. A Technical Support Representative can determine the cause of the issue and resolve it or provide you with your available service options.

Did this answer your question? If so, please click the Accept as Solution button below so that others may find the answer as well.

Re: Can't Scan With Canon LIDE 400 And Mac Sequoia

Buffering69 — Sat, 01 Feb 2025 17:54:21 GMT

I am also having the same issue. Toggling the lock / unlock switch and replugging in does nothing. When I visit the Canon Product support page, the only option is phone assistance avail mon-fri 9-5 and they charge $19.99 to talk with a technical support representative. Customers should not have to pay for support on a product that is not functioning with new software. Please give us a solution to this issue with your product that we purchased from you.

Re: Can't Scan With Canon LIDE 400 And Mac Sequoia

Patrick — Thu, 13 Feb 2025 19:56:29 GMT

Hi Buffering69,

When connecting the USB cable from your LiDE 400 to your Mac, are you using an Apple adapter? Or is the adapter from a third party? I would recommend using the Apple adapter. If you are still unable to scan, if you have another computer, please install your LiDE 400 on that computer and attempt to scan. That will help determine if this issue is caused by the scanner or the computer.

Please note, the LiDE was released in 2018. Based of the age of the scanner and because your scanner was purchased over 2 years ago , there is a charge to contact support.

Did this answer your question? If so, please click the Accept as Solution button below so that others may find the answer as well.

Re: Can't Scan With Canon LIDE 400 And Mac Sequoia

tstrohmeyer — Wed, 25 Feb 2026 18:58:59 GMT

This is what worked for me in 2026, on a 2021 Apple M1 MacBook Pro.

Toggle lock from lock to unlock (carefully, button is weak) keep it in unlocked position.
Use OEM cable that came with the scanner, and a usb-c adapter. Aftermarket cable did not work for me.
Install latest driver for Mac OSX, make sure you then add the scanner to Printers & Scanners in system settings.
Restart computer.
Open Image Capture, you should now hear and see the scanner calibrating. The window in Image Capture will look the same as the OP's, but now it should produce an overview and when you hit scan it will create a file. Start with a low DPI first, higher DPI's took a very long time and appeared as if the scanner was not working, but it was (took something like 5 minutes to make a 2400 DPI scan).