Xbox Turns Off When TV Turns Off? It's HDMI-CEC—Here's How to Disable

This is HDMI-CEC (Consumer Electronics Control)—your TV sends a "power off" command over HDMI, and the Xbox obeys.

Disable It

On Xbox (Series X|S / One):

1. Settings → General → TV & Display Options
2. Turn OFF "HDMI-CEC (Device Control)"

On TV:

• Names vary: Anynet+ (Samsung), Bravia Sync (Sony), SimpLink (LG), CEC (Vizio, TCL). Disable in Settings → External Inputs / HDMI.

Alternative: Change Xbox Power Mode

1. Settings → General → Power Mode & Startup
2. Set to "Instant-On" (now called "Sleep") – keeps console in low-power state; TV off won't force full shutdown.

Trade-off: Disabling CEC loses "TV turns on with Xbox" convenience. Choose based on preference.