If your roku won't connect to internet then there are several solutions to fix this error. The primary thing you can do is to check your internet connection and for that you must follow the steps that are given below:-
1. Firstly, look for the Roku remote and press on the left arrow.
2. Then scroll down to the bottom and look for the Settings option and select it by pressing the right arrow button.
3. Now select Network > Network Page.
4. Then go to About page to check the information related to signal strength.