Disable "Headphone Jack Inserted" Popup
Press the Start button and search for Realtek Audio Console in the Start Menu and select Device Advanced Settings from the bottom left of the newly opened window. Read: Windows Your Phone Companion App: Getting Started Guide
Toggle the switch off next to “ Enable Jack Detection when a device is plugged in”. Next, click the radio button next to “ mute the internal output device, when an external device is plugged in”.
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This would ensure that the console doesn’t automatically popup but the audio is still routed to the headphones. However, you’d still get regular notifications that you’ve plugged in your headphones. If you want a completely distraction-free experience with no notifications, just disable the notifications permission for the Realtek Console.
To disable the notifications, go to the Start menu and click Settings to open the Settings page. Click 'System'.
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Under System Settings, find Notifications & actions click to reveal its options. Scroll the apps' list on the right pane and disable the toggle switch next to Realtek Audio Console.
Now, you won’t get any more notifications or popups when you plug in your headphones next time.
Updated: October 10, 2021