• Make sure that your scanner or printer and the computer are connected correctly.

• Your scanner or printer may be damaged.

  Restart the computer, then reconnect your scanner. If the same error message still appears, service is required
  For support and service options, sign into (or create) your Canon Account from the link below.
  My Canon Account

USB connection:

Cannot communicate with scanner for these reasons:
- Scanner is turned off.
- USB cable is disconnected.

Please check and try again.

• Make sure that your scanner or printer is turned on.
• Make sure that the selected scanner is correct. Refer to the application's manual for details.
• With USB connection, check the connection of theUSB cable and reconnect as required.

Network connection:

Cannot communicate with scanner for these reasons:
- Scanner is turned off.
- (If using Wired LAN connection) It is disconnected from Wired LAN.
- (If using wireless LAN connection) Signal strength is poor due to obstructions.
- Network connection is prohibited by security software.
- Different scanner on the network is selected.

Please check and try again.

• With network connection, check the connection status and reconnect as needed.

• Reinstall the scanner driver from our website.

• Exit running applications, check that there is sufficient free space on the hard disk, then scan again.
• Make sure that there is no problem with the destination folder, file name, or access permission.

• Delete unnecessary files on the hard disk and scan again.

• Check the printer status.

• Close the other application.