Canon MG5200 On-Screen Manual page 1008

Cannot Communicate With the Machine/Cannot Print from the Machine
There may be a device such as a microwave oven using the same frequency bandwidth as
the wireless station. Place the wireless devices as far away from the interference source as
possible.
Check 11: Make sure that the network settings of the computer are correct.
Make sure that the computer can communicate with the printer and the access point over the
wireless LAN.
Check 12: Make sure that Enable bidirectional support is selected in the Ports
sheet of the properties dialog box of the printer driver.
Opening the Printer Driver Setup Window
Check 13: Make sure that the firewall of the security software is disabled.
If the firewall function of your security software is turned on, a message may appear warning
that Canon software is attempting to access the network. If the warning message appears,
set the security software to always allow access.
If using any programs that switch the network environment, check their settings. Some
programs will enable a firewall by default.
Check 14: When using a router, connect the printer and computer to the LAN
side (same network segment).
The Machine Cannot Be Detected in the Wired LAN
Check 1: Make sure that the machine is turned on.
Check 2: Is Change wireless/wired in LAN settings set to Disable LAN?
Changing the Machine Settings on the LCD
Check 3: Make sure that the LAN cable is connected properly.
Refer to the setup manual of the machine to connect the USB cable properly.
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