If you mean turn off Alexa on YouTube/YouTube TV , the usual fix is to disconnect Alexa from the YouTube app or stop using voice control on the device. Google’s YouTube help says Alexa can control YouTube on TV, including play, pause, and navigate commands, so removing that integration is the way to stop it.

What to do

  • Open the Alexa app on your phone.
  • Go to Devices.
  • Select your Echo & Alexa device.
  • Look for YouTube or any linked TV/media service and unlink or disable it.
  • If the issue is that Alexa keeps listening, press the microphone/mute button on the Echo device to disable the mic.

If you want it fully off

  • To stop the speaker itself, unplug the Echo device from power; Echo devices do not have a true power-off button, so unplugging is how they shut down.
  • If you only want YouTube to stop responding to Alexa, remove the Alexa-to-YouTube connection rather than powering off the device.

Common confusion

  • Saying “turn off Alexa in YouTube” can mean either:
  • stopping Alexa from controlling YouTube on a TV.
  • stopping Alexa from listening on the Echo device.
  • turning the Echo device off completely.

Bottom note

That’s the basic setup from public help and forum-style guidance: Alexa can control YouTube on supported TVs, and disabling the link or muting/unplugging the device stops the behavior.