Just got a Roku and set it up. Every time I try to play a show I get HDCP Error Detected #020. Is my tv not compatible with Roku and what should I do. It tells me to unplug Roku and tv but it doesn’t seem to do anything. It won’t play any show on any channel.
Try disabling refresh auto adjust in advanced display settings. Had this issue today AFTER a Roku update and ONLY while using Sling. My other apps were fine streaming. I'm on a Sony xbr65x850d. Hope that works for ya.