Scanning function is not working

[gedonis]

I am using the latest Canon Pixma G7040 device in my home network. The printer and laptop are connected to the same WiFi network. When scan any documents, I am getting the error "Cannot communicate with scanner. ... Code 5, 157, 69"

If I connect the printer to the laptop via USB and turn off WiFi, this error does not occur. 

I did search through this forum and the following did not help:

1) Disabling Firewall and/or Antivirus on my laptop

2) Disabling Firewall on the router

It is interesting that I I can print via USB and via WiFi also! Printing is working fine, scanning is not working via WiFi. It means it is NOT network problem anв it is Canon hardware (or software) issue.

How to re-enable scanning function?

[PeterSaint]

I haveCanon MX470 series Netwok
al intentar scanear da ERROR "Code:5,157,69"

google > "

usa.canon.com/internet/portal/us/home/support/details/printers/inkjet-multifunction/mx-series-inkjet/mx472/pixma-mx472
> "Operatyng System [Windows 7 (x64) (Detected)] | Language [Español]
>"Recommended Driver(s)"
MX470 series Full Driver & Software Package (Windows 10/10 x64/8.1/8.1 x64/8/8 x64/7/7 x64/Vista/Vista64/XP) 07/22/15 48.47 MB [SELECT]

> "win-mx470-1_1-ucd.exe" DOWNLOAD
Click the down arrow in the top right of the browser Windows Users - Click the small image of the folder next to your download
en download navegador flecha abajo, elije sistema Windows_7
GUARDAR ARCHIVO
ejecutar "win-mx470-1_1-ucd.exe" ... [Cambiar método de conexion LAN <> USB]

[PeterSaint]

google > "

usa.canon.com/internet/portal/us/home/support/details/printers/inkjet-multifunction/mx-series-inkjet/mx472/pixma-mx472
> "Operatyng System [Windows 7 (x64) (Detected)] | Language [Español]
>"Recommended Driver(s)"
MX470 series Full Driver & Software Package (Windows 10/10 x64/8.1/8.1 x64/8/8 x64/7/7 x64/Vista/Vista64/XP) 07/22/15 48.47 MB [SELECT]

> "win-mx470-1_1-ucd.exe" DOWNLOAD
Click the down arrow in the top right of the browser Windows Users - Click the small image of the folder next to your download
en download navegador flecha abajo, elije sistema Windows_7
GUARDAR ARCHIVO
ejecutar "win-mx470-1_1-ucd.exe" ... [Cambiar método de conexion LAN <> USB]

[PeterSaint]

SOLVED?