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Roku shows an HDCP error or purple screen? Check the HDMI chain

A purple screen with “HDCP Error Detected” points to copy-protection negotiation on the HDMI link. The chain may include a Roku player, HDMI switch or receiver, soundbar, and TV; every required device and link must support the relevant HDCP version.

Published by TV Remotely · Source checked 2026-10-29. Model and firmware behavior can differ; device tests are named only where performed.

Choose the right troubleshooting path

An HDCP error concerns the whole link. Every required device and HDMI connection must support the content.
Illustrative decision diagram based on the source guidance below; it is not a device screenshot or a hardware test.

Reseat and isolate the HDMI path

Roku recommends reconnecting HDMI at both ends and power-cycling the Roku and display/audio equipment. If an AVR, soundbar or HDMI switch is in the chain, direct connection to the TV is a useful isolation test.

  1. Disconnect the HDMI cable at both ends, turn off and unplug the TV/receiver/soundbar and Roku player, then reconnect HDMI securely before reconnecting power.

    A secure reconnect can restore the HDMI handshake.

    If that does not help: Try a different TV HDMI input and a known-good short cable.

  2. Temporarily connect the Roku directly to a TV port, bypassing the AVR, soundbar or switch.

    If the error clears, focus on the device or link removed from the chain.

    If that does not help: Check the removed device manual for HDCP support before reconnecting it.

  3. If the error appears only for UHD/HDR playback, verify the full HDMI path meets the required HDCP 2.2 support.

    Roku documents the newer HDCP requirement for 4K UHD/HDR.

    If that does not help: Do not force a 4K mode through a chain that does not support it; test a supported display setting.

Do not confuse HDCP with “No Signal”

“No Signal” usually means the display is not receiving active video on the selected input; an HDCP message means a signal path exists but its content-protection requirement is not being met. Follow the specific message and device chain rather than changing antenna or Wi-Fi settings.

What to do next

Treat Roku’s HDCP message as an HDMI protection-chain issue; bypass receivers and switches to isolate the link.

Sources and verification

Frequently asked questions

Does a Roku purple screen mean the TV is broken?
Not necessarily. Roku says an HDCP mismatch in the HDMI chain can trigger the purple screen.
Why does HDCP appear only for 4K or HDR?
Roku says 4K UHD/HDR playback requires HDCP 2.2 support across the relevant connected devices.