You need to have the same Wi-Fi channel number that you are using for the wireless router as your computer.
It is normally set in the way that you can use all the Wi-Fi channels.
However, when the channels that you are
using are restricted, the Wi-Fi channels do not match.
See the instruction manual provided with your computer and check the Wi-Fi channel number available for
your computer.
Check7
Make sure channel set on wireless router is a usable channel as confirmed in
the previous check.
If it is not, change the channel set on the wireless router.
Check8
Make sure security software's firewall is off.
If your security software's firewall is on, a message may appear warning you that Canon
software is attempting
to access the network. If this warning message appears, set security software to always allow access.
If you are using any programs that switch between network environments, check their settings. Some
programs use a firewall by default.
Check9
If printer
is connected to an AirPort Base Station via LAN, make sure you use
alphanumeric characters for network name (SSID). (macOS)
If the problem is not resolved, click here and redo setup.
• Positioning:
Make sure there are no obstacles between the printer
and the wireless router.
Cannot Connect to a Printer through Wireless Direct
Check1
Is the icon displayed on the touch screen?
If not, Wireless Direct is disabled. Turn on Wireless Direct.
Check2
Check the settings of your device (smartphone/tablet).
Make sure Wi-Fi is enabled on your device.
For details, refer to your device's instruction manual.
Check3
Make sure printer is selected as connection for device (e.g. smartphone or
tablet).
Select the network name (SSID) for Wireless Direct specified for the printer as the connection destination for
devices.
Check the destination on your device.
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