Showing results for 
Show  only  | Search instead for 
Did you mean: 

image CLASS MF249dw in operation for 4 yrs. - new issue - prints but doesn't scan


have an image CLASS MF249dw that is about 4 years old. I am running windows 10 and connected by USB.

Until recently, I had no issues with scanning. Recently I got an error when attempting to scan from the printer.

When using the latest version of MF Scan utility, I get a Scan Gear dialog box "Cannot communicate with the scanner, the cable may be disconnected, or the scanner may be turned off. Check the scanner status and try again. Scanner driver will be terminated. Code: 155,0,0"

I have gone through the process of downloading the latest Canon drivers and before attempting to install I completely delete/uninstall all the Canon drivers, restart the computer, and then do a fresh install of the latest drivers/software.

Any legitimate help/suggestions are appreciated


Product Expert
Product Expert


If you are getting that message, it could be caused by security software blocking the connection, another device interfering with scanning via USB.. 

If you are using Windows 10 I would suggest by turning off an security software running on the computer and then restarting MF scan utility to see if you get the same error. If you do get the same error, you can try closing the software and then moving the USB cable to another port on the computer and then opening the software again. If possible, plug the 249 directly into the computer and avoid any USB hubs.

If the software still gives you errors while scanning, it would usually point to something blocking the scanner connection or files missing from the computer. The hardware should be fine if you can print through the USB connection. In this situation, I would suggest contacting support over the phone at 1-800-652-2666. Our agents would be happy to assist checking what might be causing the issue.

03/14/2023: New firmware version 1.8.1 is available for EOS R6

03/02/2023: New Firmware Updates Are Available:

EOS R7 - Version 1.3.0EOS R10 - Version 1.3.0
02/24/2023: We've updated Share Your Photos

2/07/2023: New product announcements!

EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM
01/18/2023: New firmware version 1.1.1 is available for EOS R6 Mark II
01/09/2023: Help ensure your autofocus is properly aligned with a Canon Precision Alignment
01/03/2023: Welcome to CES 2023!
12/08/2022: New firmware version is available for EOS C70
12/07/2022: New firmware version 1.7.0 is available for EOS R5
11/22/2022: New firmware available for EOS R3, EOS R7 and EOS R10
11/16/2022: We're thrilled to be ranked among the Best Employers for Veterans in 2022 by Forbes.
08/31/2022: New firmware version 1.1.1 is available for RF 70-200mm L IS USM
08/09/2022: New firmware version 1.2.0 is available for CR-N 300
08/09/2022: New firmware version 1.2.0 is available for CR-N 500
07/14/2022: New firmware version 1.0.1 is available for CR-X300
06/10/2022: Service Notice:UPDATE: Canon Inkjet Printer continuous reboot loop or powering down
06/07/2022: New firmware version 1.3.2 is available for PowerShot G7 X Mark III
05/31/2022: Did someone SAY Badges?
05/26/2022: New firmware version is available for EOS-C500 Mark II
05/26/2022: New firmware version is available for EOS-C300 Mark III
05/10/2022: Keep your Canon gear in optimal condition with a Canon Maintenance Service
05/05/2022: We are excited to announce that we have refreshed the ranking scale within the community!
04/26/2022: New firmware version is available for EOS R5 C
03/23/2022: New firmware version is available for EOS-C70
02/09/2022: Share Your Photos is back!
02/07/2022: New firmware version 1.6.1 is available for EOS-1DX Mark III
01/13/2022: Community Update. We will be retiring the legacy profile avatars on 01/20/2022. Click this link to read more.