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Reset printers and cartridge. Printers problem solving,tips, tricks and tutorial.
Error code list by brand
How to solve error E21 or E,2,1 on Canon MP495, MP499 printers
The error code
E21 or E,2,1
means there is a timeout error occurred during WPS push button setup, on Canon Pixma MP495, MP499 printers.
Press the Color button
Try the WPS setup again.
Setup the printer for use over a Windows wireless LAN using WPS (Wi-Fi Protected Setup)
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