For the records, we investigated for a customer the very same problem.
It turned out that 802.11r amendment makes Canon wireless detection go crazy and see WPA2 network as unencrypted.
Turning off 802.11r on Wi-Fi properties allows the printer to see the correctg encryption and connect.
After succesfull connection, by the way, you can even turn 802.11r back on if needed.
Made an account just to comment on this.
This is the only thing that solved my issue. Like some others, i could not find the fast roaming options (802.11r) in my router settings. But changing the security from `WPA3` to `WPA2` got the printer to connect to the wifi.
And afterwards, i changed the security settings back and it still stayed connected.
So thank you very much for this!
This sounds like the old 802.11r problem. See my posts https://community.usa.canon.com/t5/user/viewprofilepage/user- or mrwolf's id/190018 or https://community.usa.canon.com/t5/user/viewprofilepage/user-id/149756
If so, you need to switch off 802.11r (AKA "fast roaming") on your router or "mesh" hubs - how to do this will be specific to whatever hardware you are using.
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