It worked for me too! DNS issue indeed. I entered the Primary DNS of my Gateway/Helix from Videotron, and added 1 to the last pair of digits. And I entered "no" when asked for the secondary DNS. Working like a charm now. Hope it helps!
I've been having the same issue. Pixma MX 492 bought in 2018. As I can see, this problem is quite recent, a few days old. My guess is there is a problem with Canon and its connection to the printer, because mine goes beserk when my wifi is on but wor...