How can I use streaming apps on my Xbox 360?

YouTube has discontinued support for the 360

You’re going to find that it’s going to be the case more and more. The user base isn’t big enough to continue support.

You can not stream xbox 360 games to your PC (xbox 360 can't do that) BUT you can stream them through the windows 10 xbox app and have it connected to your xbox one that is playing a

backwards compatible xbox 360 game. You'll get achievements while you do it that way.

Learn how to use xbox one to windows 10 PC streaming here:
https://support.xbox.com/en-US/games/game-setup/how-to-use-game-streaming

You can't connect the Xbox 360 to the Xbox App. Only the Xbox One can stream to the Xbox App.

Long explanation:

The Xbox One has specifically resources reserved to record or stream the console's video output, so you can stream to Beam or Twitch, or record your Gameplay.

The Xbox 360 does not have these resources. And since compressing and streaming video requires a lot of CPU power, and the Xbox 360 is uses nearly 98% CPU resources for rendering games (the rest is used for Guide, Parties and background music), the Xbox
360 also can't get an update to allow game streaming.

In short: It's not possible to connect the Xbox App to the 360.

You can not play xbox one or xbox 360 games - either on disc or digitally - on a windows 10 PC. The

play anywhere feature is only for those who have purchased the digital copy of the games on that list and it can be played on xbox one and windows 10, that does not apply to xbox 360 games at all.

You CAN stream them from an xbox one to your windows 10 PC using the Streaming feature in the xbox app on windows 10 and then have your xbox one play a backwards compatible game and then stream the xbox one to your PC while it's playing an xbox 360 game
and you can earn achievements that way.

Streaming from xbox one to windows 10 xbox app:
https://support.xbox.com/en-US/games/game-setup/how-to-use-game-streaming

Xbox 360 games that can be played on xbox one:
http://www.xbox.com/en-US/xbox-one/backward-compatibility/available-games

If you own the game digitally it will show up on My Games and Apps > Games > (your game). If you own the disc insert it and download the converted copy and play while the disc is in.

You can not play xbox one or xbox 360 games - either on disc or digitally - on a windows 10 PC. The

play anywhere feature is only for those who have purchased the digital copy of the games on that list and it can be played on xbox one and windows 10, that does not apply to xbox 360 games at all.

You CAN stream them from an xbox one to your windows 10 PC using the Streaming feature in the xbox app on windows 10 and then have your xbox one play a backwards compatible game and then stream the xbox one to your PC while it's playing an xbox 360 game
and you can earn achievements that way.

Streaming from xbox one to windows 10 xbox app:
https://support.xbox.com/en-US/games/game-setup/how-to-use-game-streaming

Xbox 360 games that can be played on xbox one:
http://www.xbox.com/en-US/xbox-one/backward-compatibility/available-games

If you own the game digitally it will show up on My Games and Apps > Games > (your game). If you own the disc insert it and download the converted copy and play while the disc is in.