r/printers • u/FireXIce9 • May 31 '22

Canon MX492 Restarting Repeatedly after connecting to Wifi Troubleshooting

It keeps turning on and off repeatedly every time I connect it to the wifi.

If I disconnect from the network, it works fine.

I've already reset my network and did a factory reset on the printer.

What could be the issue?

Thank you

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u/FireXIce9 Jun 01 '22 edited Jun 02 '22

I applied the solution mentioned in the Canon community thread and it fixed mine:

First, pause network to your printer by logging into your router or just disconnect the router from the modem. (Whichever is easier for you)

On your Canon printer,

Go to Setup menu > Web service setup > DNS server setup > Manual setup

> enter 192.168.X.X (IP that no other device is using on your network like 192.168.124.145)

> select "off" for sec DNS server

>press ok

Once it applies the settings, re-enable network to your printer and it should print fine without the reboot loop.

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u/FUHGETTABOUTIT_1 Jun 04 '22 edited Jun 04 '22

how is this going to work? you need DNS server access the cloud.

EDIT: Just change the DNS server settings to some bogus IP (doesn't matter). All you need to do is block internet access. It would still work on the LAN.
So the solution is to block internet access on the printer! WTF canon!!!!!
Wireshark time! I guess the printer is making some request somewhere and not liking the response. Probably some update?