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Devices Which May Interfere with Wi-Fi Communication
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Solution If your product issue was not resolved after following the steps above, or if you require additional help , please create or log in to your Canon Account to see your technical support options.
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Setup the MX420 for use over a Wireless LAN - WPS (WiFi protected setup) method - Macintosh
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Check Printer Settings If you forgot the network key, you may be able to retrieve it using the Canon PIXMA Wireless Setup Assistant. If you cannot obtain it, refer to the instruction manual for the access point or the router, or you may contact each manufacturer for help . If you still have the problem, try the next solution menu [ 3. Review the setting of the "Firewall" security software
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"No AirPrint Printers Found" When Attempting to Print from an iOS or iPadOS Device (PIXMA / MAXIFY)
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Please follow these steps to troubleshoot the issue: - Wi-Fi - Advanced ... is connected to Wi-Fi : Tap Wi-Fi ... Make sure that Wi-Fi is enabled. ... cycling does not help : ... the printer and wireless router closer together ... ... be interfering with Wi-Fi communication ... the printer and wireless router. ... network or no Wi-Fi is available: If your mobile device and printer ... network, or Wi-Fi is unavailable, ... This feature allows your printer to send it's own signal to your mobile device without the use of a wireless router.
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Check the printer's settings - MX420
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Check Printer Settings During the wireless setup in the ... ... condition for the wireless connection ... ) printer, ii ) access point ... ... Confirm that the WiFi lamp is ON ... If the WiFi lamp is not ON, the wireless function of the ... ... Please do the wireless setting again. When the WiFi lamp is ON ... ... Please do the wireless setting again. ... the Canon PIXMA Wireless Setup Assistant. ... each manufacturer for help . The operation of the "Firewall" security software may interfere with the communication for the wireless setup. ... As the following setting interferes with the communication for the wireless setup, change the setting.
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How to Restore Printer and Router Communication
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Note that wireless communication between all of your devices and the wireless network will be lost while you complete these steps. ... If your product issue isn't resolved after following the steps above, or if you require additional help , please create or log in to your Canon Account to see your additional options.
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Understand Wi-Fi Protected Setup (WPS)
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Learn about WPS ( Wi-Fi Protected Setup) and how it can be used to quickly and easily connect your printer to your wireless network.
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Wireless LAN Wi-Fi Protected Setup (WPS) for Windows - PIXMA MX420
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Learn how to set up your PIXMA MX420 with a Windows computer for use over a Wireless LAN via the Wi-Fi protected setup (WPS) method.
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Find wireless network ID and security key on a Windows computer
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> Network & Internet In the Wi-Fi section, scroll down to Network and Sharing Center
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Troubleshoot printer not detected issue by disabling iPv6 in network LAN settings (LCD models only)
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Possible solution - disable IPv6 Troubleshoot printer Wi-Fi connection by changing settings Note: depending on your printer model, you may find additional instructions helpful at Printer Support Home
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Setup the MX420 for use over a Wireless LAN - WCN (Windows Connect Now) method
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1. Make sure that any of the lamps on the mode buttons (A) lights and that the Wi-Fi lamp (B) lights blue. reference:
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