HDCP error happens when you try streaming 4K Ultra content on your TV. With the HDCP error , Roku will throw you an error 020. Remove the HDMI cable from your TV and power off both your Roku and TV. Remove the plugs connected with your TV, Wait for at least 30 seconds and try to connect the HDMI cable and plug to your Roku and your TV. Now, again stream the same content on your Roku. That's it, you fixed the problem and you can watch the video. If you still couldn't resolve it, call us @+1-844-576-1390 nd we will give immediate solutions for all your queries!