@6b6561 Thanks for the suggestion. However, I have tried restarting, rebooting, resetting, etc.

@Kevin_Z Hi, Do you have any more information on this?

@Kate67 Are your Deco's in router mode? If so, try to shift to AP mode and see if it works. I have a similar issue and shifting to AP mode worked for me.

@Kevin_Z Hi Kevin, Thanks for coming back to me, your input is very valuable. Have you ever tried to reboot or reset the Chromecast audio device which you failed to join the wifi network. Besides,...

My setup is three Deco E4's, wirelessly set up as router in a chain topology. I have some devices that simply refuses to connect to the main network on wireless. They can conect to the guest network...