Wi-Fi & connectivity

[Mark0912]

we have reset factory settings and restarted the router and still unsuccessful in connecting. I have tried two different rokus and I’m still not getting connected. Our WiFi signal is excellent. Getting frustrated as to why this is happening and what we can do to resolve this. This roku express is brand new (3 months). 

[makaiguy]

There are a couple router setting issues that can prevent establishing wifi connections.  And to make matters worse, both of them can be caused by recently-reported router updates. 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 AND REPORTS NETWORK QUALITY BUT CANNOT CONNECT
  Some router updates have changed the router's connection settings 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.
   
• ROKU CANNOT FIND LOCAL WIFI NETWORK
  Some routers (reported from Xfinity and Cox, but there may be others) 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 will allow the connection to be reestablished. Depending on your Roku model and Roku version number you'll find the System restart option under either Settings > System or Settings > System > Power.

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.

[makaiguy]

One more potential router issue that can keep any Roku from making a 2.4 GHz wifi connection:

Rokus support channels 1-11 in the 2.4 GHz WiFi band, as are used in North America. If your router supports 2.4 GHz channels outside this range make sure your router is set to use a channel in this range and that you aren't using an auto setting that could select channels outside this range.