topic Re: CanoScan not allowing me to setup - "Error. This software cannot be started as it is in use in Printer Software & Networking

CanoScan LiDE 300 Software setup halted by error message

Grace2 — Tue, 28 Nov 2023 14:57:33 GMT

CanoScan not allowing me to setup - "Error. This software cannot be started as it is in use by anoth

Hi there! I am trying to set up my CanoScan LIDE 300, however whenever I download the setup it is giving me an error saying "This software cannot be started as it is in user by another device" (I have attached a screenshot below). The download is called "mac-lide300-1_0-mcd.dmg" from https://ij.manual.canon. I have tried researching the issue to solve this however I have not found anything helpful. Any advice or information would be very appreciated!

Re: CanoScan not allowing me to setup - "Error. This software cannot be started as it is in use

Stephen — Sun, 26 Nov 2023 15:51:46 GMT

Hello!
So that the Community can help you better, we will need to know more information:
• Which version of macOS are you using?

Any other details you'd like to give will only help the Community better understand your issue.

If you're in the United States, and this is an urgent support need, please click HERE to visit your My Canon Account to discover your personalized support options.

If you're outside the USA, please click HERE to find support options in your country.

Thanks, and have a great day!

Re: CanoScan not allowing me to setup - "Error. This software cannot be started as it is in use

Grace2 — Sun, 26 Nov 2023 15:59:10 GMT

Hi! The macOS I am using is 13.3.1 (22E261)

Re: CanoScan LiDE 300 Software setup halted by error message

Patrick — Tue, 28 Nov 2023 16:20:17 GMT

Hi Grace2,

To use your CanoScan LiDE 300 with your Mac (using Ventura), please follow these steps:

1. Click the Apple in the upper left corner.

2. Click on System Settings.

3. Scroll to bottom of left side and click on Printers & Scanners.

4. Click the Add Printer Scanner or Fax button on the right.

5. Once the Add Printer window appears, connect the USB cable from your LiDE 300 to your Mac.

6. When your LiDE 300 appears in the list, click on it and click Add.

Your CanoScan LiDE 300 will then be installed.

You can use the IJ Scan Utility Lite to scan with your CanoScan LiDE 300.

To download the IJ Scan Utility, please CLICK THIS LINK.

Once the download is complete, please open or run it and follow the prompts to install the IJ Scan Utility Lite.

For information on the usage of the IJ Scan Utility Lite, please use this link:

https://ij.manual.canon/ij/webmanual/ScanUtilityLite/M/3.1/EN/SUL/sul_scan01_m.html

Re: CanoScan LiDE 300 Software setup halted by error message

viniciusalves — Sun, 29 Mar 2026 16:11:01 GMT

Hello!

I had the same problem, and was now trying to download the IJ Scan Utility Lite with the link you posted, but it didn't work. The error message keeps popping up.

Any tips?

Thank you

Re: CanoScan LiDE 300 Software setup halted by error message

Stephen — Sun, 29 Mar 2026 16:17:44 GMT

Hi viniciusalves,

Oh no, that sounds super frustrating when you're just trying to get your scanner up and running! That "software in use" error can definitely be a tricky one, especially when you've already done some digging.

Let's try a few things to see if we can get past this:

Restart your Mac: Sometimes a fresh start is all it takes to clear any lingering processes.
Check Activity Monitor: After restarting, open your Mac's Activity Monitor (you can find it in Applications > Utilities). Look for any processes related to "Canon" or "CanoScan" and if you find any, select them and click the "X" button in the toolbar to force quit them. Then try the installation again.
Disconnect and Reconnect: Make sure your CanoScan LiDE 300 is disconnected from your Mac during the software installation, and only connect it when the installer prompts you to.
Verify Latest Drivers: It's always a good idea to double-check the main support page for the latest drivers and full installation instructions for your specific macOS version. You can find it here: CanoScan LiDE 300 Support Page

If these steps don't resolve the issue, please let us know! We're here to help you get scanning.