How to solve error E21 or E,2,1 on Canon MP495, MP499 printers

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Résoudre l'erreur E21 ou E,2,1 sur les imprimantes Canon MP495, MP499

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.


Solution 1:
  • Press the Color button
  • Try the WPS setup again.

Solution 2:

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