Roku display turns into a purple screen on account of the HDCP error. If the Roku player finds that the HDMI link to the TV doesn't match with the protection technology namely, the HDCP, this error occurs. The associated error message with the HDCP is “HDCP Error Detected” with an error code of 020.
The HDCP is the standard for copy and content. And is widely used in the players, cables and in the streaming devices. This error may also be due to the faults in the HDMI cable or the HDMI connector. Here’s how to resolve the HDCP error message while using your Roku player.
When you used the Roku player and suddenly the screen color changes to purple, it means that the HDCP error has been detected. This happens mostly while streaming the videos. Proceed with the next step on seeing the HDCP error.
You should then 'Unplug' the end of the HDMI cable from your Roku player and TV.
Turn off the TV and then unplug the 'Power Cord'.
Now, you can remove the power cord completely from your Roku player.
Now, reconnect the end sides of 'HDMI cable' firmly and tightly.
Now, plug the power cord to the TV as well as the player and be patient for these devices to power on automatically, else handle this through Roku remote.
Now, you can view the streaming video again without encountering the HDCP error detected message or the purple screen.
You can now solve the error - ‘HDCP error detected’ with error code 020 by following these instructions.