Windows Hello Dark Room Issue
- Microsoft's recent update to Windows Hello now mandates the use of visible light for facial recognition, according to a Microsoft announcement reported by Windows Central.
- Despite the change, initial tests suggest the update may have little practical effect for most users.
- Even with Windows' anti-spoofing technology enabled, logins proceeded without issue.
Microsoft’s Windows Hello facial recognition now needs visible light, a significant change users should know about.This update, designed to bolster security by addressing spoofing vulnerabilities, might impact your login experience. Our tests reveal that despite the requirement, logins frequently enough succeed even in dimly lit rooms, thanks to the illumination from laptop screens. However, some users are experiencing recognition issues. Learn how this affects your daily use of windows Hello and the importance of having a PIN as a backup login method. This news,brought to you by News Directory 3,unpacks the technicalities and the real-world implications. Discover what’s next for Windows Hello security improvements.
Windows Hello Update: Visible Light Now Required for Facial Recognition
Updated June 16, 2025
Microsoft’s recent update to Windows Hello now mandates the use of visible light for facial recognition, according to a Microsoft announcement reported by Windows Central. The change,implemented in an April patch,technically means Windows Hello now uses both a webcam and an infrared depth camera for logins.
The update addresses a spoofing vulnerability, Windows central said.
Despite the change, initial tests suggest the update may have little practical effect for most users. Tests on a Surface Laptop 7th Edition, an Asus ZenBook S 14, and an MSI Prestige 16 AI Evo, all updated with the April patch KB5055523, showed successful facial logins in near-dark conditions. The laptop screens provided sufficient illumination for the cameras to recognize the user’s face.
Even with Windows’ anti-spoofing technology enabled, logins proceeded without issue. The anti-spoofing feature is designed to enhance security against impersonation.
However, some users, including a colleague and Windows Central staff, have reported that their laptop cameras struggled to recognize them after the update.
As a backup, Microsoft requires a numeric PIN for login.
While the update aims to enhance PC security by requiring visible light, the practical impact appears minimal. The change may not warrant significant concern, as a PIN remains a reliable alternative.
What’s next
Users should ensure their Windows Hello settings are up to date and be prepared to use their PIN if facial recognition fails in low-light conditions. Further updates and refinements to the system are expected as Microsoft continues to improve Windows Hello’s security and reliability.