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

ImageClass MF726Cdw will not copy or scan


ImageClass MF726Cdw will not copy or scan, it prints from documents fine, but it will not copy or scan neither from the computer app nor the printer itself. The printer is connected to the Window 11 computer wirelessly. I have the most up-to-date drivers. I also get the message: "Cannot communicate with any of the scanners.  The scanners may not be connected, or may be turned off."  I do not think the problem is with the connection to the computer, but with the printer itself since it will not print from the printer control panel. I need help. Thank you in advance for any suggestions.


Product Expert
Product Expert

Hello CarlosMarino,

The issue that you are describing would point to communication issues or something is blocking the scanner connection on the computer. In this situation, I would suggest reinstalling the latest version of the  imageCLASS MF729Cdw/MF726Cdw MFDrivers and the network patch for scanning from our support site using the link HERE. Before starting the setup, you will need to turn of any security software that might get in the way of the install. 

Thank you for your reply. After discussions with Canon support, they had me try several fixes including updating the drivers and the firmware. None of these worked and I was told that the problem was that a control board needed to be replaced, but the repair would be about the same or more than buying a new printer. I bought a new new one and now I'm trying to get rid of a multifunction printer that only prints. Thanks again.

08/18/2023: Canon EOS R5 C training series is released.

07/31/2023: New firmware updates are available.

CR-N700 - Version 1.2.0

CR-N500 - Version 1.3.0

CR-N300 - Version 1.3.0

CR-X300 - Version 1.1.0

06/30/2023: New firmware version is available for EOS-R5 C

05/31/2023: New firmware updates are available.

EOS R6 Mark II - Version 1.1.2

EOS R6 - Version 1.8.2

EOS R7 - Version 1.3.1

05/18/2023: New firmware updates are available.

EOS Rebel T100 - Version 1.1.0

EOS Rebel T7 - Version 1.2.0

EOS 5D Mark IV - Version 1.4.0

EOS 6D Mark II - Version 1.2.0

PowerShot Elph 360HS - Version

PowerShot SX420 IS - Version

PowerShot 620 HS - Version

PowerShot SX720 HS - Version

PowerShot G1X Mark III - Version

PowerShot G7X Mark II - Version

PowerShot G9X Mark II - Version


04/20/2023: New firmware version 1.4.1 is available for EOS R3

03/30/2023: New firmware updates are available.

EOS R5 - Version 1.8.1

EOS 1DX Mark III- Version 1.7.1

Speedlite EL-1 - Version 1.0.2

03/30/2023: Product Advisory for EF50 F1.2 L USM

03/30/2023: Product Advisory for EOS R10

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
01/09/2023: 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