My stupid Roku Express + won't stay connected to my wifi. My signal is excellent and is working cuz. I am still able to work on my work computer. I don't really use the wifi on my phone. I am just over this. I have reset the stupid thing over and over and over again. I am about to put a hole through it thats how much I am over this. I have not even had the stupid thing for a year.
This has always worked for me to re-establish my net connection when it has been lost or not performing well:
If that doesn't fix it, try disconnecting the power to your Roku for a few seconds. When it comes back up, see if you then can set up the network connection.