For the last few days my Roku wouldn’t connect to my wifi, even though my wifi is working properly (all other devices are connected and working). I even went and bought a new Roku Express+ thinking that would solve it but I am still having the same issue. It will connect sometimes, but then it will randomly disconnect. When I go to reconnect to wifi it will show my wifi and say the strength is excellent but when I try and connect it fails. Why does this keep happening and how can I fix it?
Furthermore, if the affected device is either a Roku Express or Roku Premiere, please note that they are only compatible with wireless b/g/n networks on the 2.4 GHz spectrum. Ensure that your router is broadcasting a 2.4GHz Wi-Fi network for the device to connect to. You can check your device model by navigating to Settings > System > About.
You can also try configuring your router and use wireless channels 1, 6, or 11 which are the preferred channels in North America. Each time you change the wireless channel, you will likely need to apply/save changes before you are prompted to restart the router.