Accounts Turn On or Off Auto Adjust Screen Brightness during Face Recognition in Windows 11

This tutorial will show you how to turn on or off automatically adjust screen brightness during Windows Hello facial recognition for your account in Windows 11.

You can set up facial recognition sign-in with your PC's infrared camera or an external infrared camera.

Starting with Windows 11 build 26340.9750 (Experimental 26H2) for Insiders, Windows Hello facial recognition can temporarily brighten your screen to help you sign in when you're in a dark or dimly lit room.

When Windows detects that ambient lighting is too low during a facial recognition sign-in attempt, Windows Hello will temporarily increase your screen brightness so the display acts as a light source to illuminate your face. After sign-in completes (or the attempt ends), your screen returns to its previous brightness level.

Screen brightness is increased only when it's needed, that is, when the IR camera can see your face but there isn't enough light for the color camera.

If you turn this off, Windows won't change your screen brightness during face sign-in, and facial recognition sign-in may not work in darker environments.

If face sign-in doesn't succeed after the brightness increase, you can still sign in with your PIN or fingerprint.

The brightness change is temporary and reverts automatically—you don't need to reset it manually.

Reference:



Here's How:

1 Open Settings (Win+I).

2 Click/tap on Accounts on the left side, and click/tap on Sign-in options on the right side. (see screenshot below)



3 Under Ways to sign in, click/tap on Facial recognition (Windows Hello) to expand it open. (see screenshot below step 4)

4 Check (on - default) or uncheck (off) Automatically adjust screen brightness during face recognition for what you want. (see screenshot below)


5 You can now close Settings if you like.


That's it,
Shawn Brink