While installing my new TR8520 printer using the downloaded Windows 10 setup package, the network connection failed. The process reported something like, "This printer does not support 5G wi-fi. Please connect to a 2.4G wi-fi network."
My Norton Core router enables me to use the same SSID for the 2.4G and 5G wireless networks. Apparently, the downloaded setup package could not choose the 2.4G wi-fi. All of our devices are on this SSID, and putting this printer on a different SSID would make it inaccessible to our other devices.
I almost disassembled the printer to return it to the store. Instead, I used the on-printer screen commands for the wi-fi setup. The printer itself easily connected to the same SSID as above, presumably the 2.4G connection (assuming the downloaded setup package was correct that this printer only support 2.4G). Our devices print to it across wi-fi with no problems.
Canon USA should update the Windows 10 installation package to correctly handle this situation.