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Automatic or manual light setting blocked.

RAKOTOARISON Boris 0 Reputation points
2026-04-07T13:52:52.42+00:00

“The issue appeared the moment I tried to lower brightness via the quick‑action slider just before the PC shut down for the update; after KB5085516 completed, the slider disappeared and is now greyed out in Settings > System > Display, even though the screen itself works normally

Windows for home | Windows 11 | Display and graphics

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  1. John DeV 161.3K Reputation points Independent Advisor
    2026-04-07T14:31:29.4233333+00:00

    Hi, good day!

    I recommend reporting the issue via Feedback Hub app to notify Microsoft.

    https://support.microsoft.com/windows/send-feedback-to-microsoft-with-the-feedback-hub-app-f59187f8-8739-22d6-ba93-f66612949332

    Please try to uninstall the KB5085516 update.

    https://support.microsoft.com/windows/how-to-uninstall-a-windows-update-c77b8f9b-e4dc-4e9f-a803-fdec12e59fb0

    If this fixes the issue, please try to temporarily pause updates to prevent it from reinstalling.

    Open Settings > Windows Update > Pause updates > Pause for 1 week

    I look forward to your update and am happy to continue working with you until the issue is resolved. If you find the answer helpful, please click "Accept Answer" and consider upvoting it. Otherwise, please keep me posted by clicking "Add comments" below instead of selecting Yes or No.

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