<ul data-eligibleForWebStory="true"><li>Microsoft has disabled Windows Hello facial recognition in dark rooms to fix a spoofing vulnerability.</li><li>This change was quietly made in April affecting Windows 11 users.</li><li>Users can no longer sign in with their face in dark rooms due to the security fix.</li><li>Windows Hello facial recognition now requires color cameras to see a visible face during sign-in.</li><li>Disabling the webcam in Device Manager allows Windows Hello to work in the dark, but limits camera usage in other apps.</li><li>Microsoft utilizes a combination of color cameras and IR sensors for Windows Hello.</li><li>The security flaw was rated 'important' by Microsoft but has not been publicly disclosed or exploited.</li><li>Microsoft suggests it's 'less likely' for the vulnerability to be exploited locally on a device.</li><li>It's unclear if Microsoft plans to enable Windows Hello in the dark again in the future.</li></ul>

Microsoft’s Windows Hello facial recognition no longer works in the dark

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