We appreciate your patience regarding this matter. I understand that you are unable to connect your Roku device's wireless connection.
Do you get an error message when you try to connect to your wireless network, or does the issue occur when you stream a specific channel?
If you have the Roku Express/Premiere and it is a single-band wireless device which means it only supports a 2.4 GHz connection. Your Roku Express/Premiere will not recognize the 5Ghz network. You need to make sure that your 2.4 GHz network is active by using your mobile phone and checking if you can detect the 2.4 GHz network.
There are a couple of network connection problems recently being reported that have been caused by updates to routers. These have primarily been reported with routers supplied by internet providers, but it's possible they could also occur with user-owned routers that have received updates.
ROKU LOCATES NETWORK BUT CANNOT CONNECT Some router updates (reported for Xfinity and Cox but there could be others) have changed the router's security setting from b/g/n to just g/n, causing some Roku models to lose their ability to connect to the network. The solution is to set the router's configuration back to using b/g/n security.
ROKU CANNOT FIND LOCAL WIFI NETWORK Some routers have had their 2.4 GHz wifi band turned off, leaving only the 5 GHz band operational. Devices with single band wifi radios, notably Roku Express and Premiere models (but not Express 4K models) as well as many other single band devices can not even see the 5 GHz band. The solution is to reconfigure the router and turn the 2.4 GHz band back on.
If this problem was not caused by a router update deactivating the 2.4 GHz band, often a restart of the router (even if other devices are still connecting) followed by a restart of the Roku via Settings > System > System restart (for Roku TV it's Settings > System > Power > Restart) will allow the connection to be reestablished.
If you need to make configuration changes on equipment supplied by your internet provider but you have no access to its settings, you may need to request your internet provider to make the changes for you.
Roku Community Streaming Expert I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well. If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
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