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 attemptingto 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. Someprograms use a firewall by default.Check9 If printer is connected to an AirPort Base Station via LAN, make sure you usealphanumeric characters for network name (SSID). (macOS)If the problem is not resolved, click here and redo setup.• Positioning:•Place the printer and wireless router where there are no obstacles between them.Cannot Connect to a Printer through Wireless DirectCheck1 Check printer settings.Make sure the icon is displayed on the LCD.If not, press the Wireless select button to enable 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 ortablet).Select the network name (SSID) for Wireless Direct specified for the printer as the connection destination fordevices.Check the destination on your device.For details, refer to your device's instruction manual or visit the manufacturer's website.To check the network name (SSID) for Wireless Direct specified for the printer, print out the network settinginformation of the printer.Printing Network SettingsCheck4 Have you entered the proper password specified for the Wireless Direct?To check the password specified for the printer, print out the network setting information of the printer.281