Record the complete display chain
Write the connection order from Roku to the display, including any switch, soundbar, receiver or adapter. Roku’s support says every HDMI device in the path must support the relevant protection. Its 4K and HDR guidance specifically requires HDCP 2.2 across the connected chain.
Keep the error wording and the type of content with the record. A failure limited to 4K or HDR is a different observation from the error on every programme. Do not reduce the report to a bare error number when the actual screen provides a more specific HDCP message.
Follow a controlled reconnection and comparison
Roku’s help describes disconnecting HDMI ends, powering down the connected equipment, reconnecting the cable securely and powering the devices back on. Follow the equipment instructions and preserve the original connection order in your notes so the result remains understandable.
If the error persists, Roku suggests trying another HDMI input or cable and, when an intermediate device is involved, connecting the player directly to the TV for comparison. A direct connection succeeding narrows the difference to the removed portion of the chain; it does not identify one component without further evidence.
Check capabilities before replacing equipment
Inspect the exact input specifications of the television and any intermediate audio device. A soundbar supporting audio over HDMI does not establish that every input or passthrough path supports the required video-protection version.
If asking for help, provide the models, connection order, content type and result of the direct-TV comparison. Keep the task within a supported protected-output route; an HDCP error is not a reason to seek a protection-removal workaround. This comparison helps the equipment maker assess the actual link instead of sending you back to reset an unrelated streaming account.