@Mommarkus
Thanks for the post.
Have you tried using another HDMI port on your TV as well as switching out the HDMI cable to see if that resolves the issue?
In addition, we would recommend taking a look at the troubleshooting steps provided by our Support page here: Fix an HDCP error
Please keep us posted what you find out.
Thanks,
Danny
Danny R.
Roku Forum Moderator