Have had no trouble printing before to my Canon MP495 via the WiFi connection but have been unable to do so today and the WiFi connection light on the printer is not lit. Can anyone suggest what my problem may be
You will have to reconfigure your printer's wi fi connection to the wireless network . This may require a complete reinstall of your printer to recover the connection. Have checked on the Canon website for solutions to your problem. Do this as it maybe a common issue. If you can get your printer's wifi to work you can use WPS on your router to connect the network.