You want to disable home button on Steam because you’re used to making it pop-up to the home screen on console but doesn’t do the same on PC, right? Me, too. If for whatever reason you’ve been wanting to stop Steam for activating automatically whenever you press the Home button on your gamepad for PC, there’s actually a simple method that’s been implemented recently but its not found in Steam’s main menu but in Big Picture Mode itself.
Disable Home Button – Quick Fix
To disable Steam Big Picture from activating when you press the Home button on your Xbox controller or PS4 DualShock 4 gamepad on your PC, you just need to uncheck a simple setting while in Big Picture mode. To do this start Steam Big Picture mode, click the gear button for settings in the upper right corner and locate the following option:
Inside Controller Settings, uncheck “Guide Button Focuses Steam”
This will now disable the Home button on your gamepad from activating Big Picture Mode.