February and March 2026 Windows 11 updates causing system hard freezes when camera is initiated.

Daniel Hollands 10 Reputation points
2026-03-23T14:08:04.79+00:00

Following the February and March 2026 Windows 11 updates (KB5077179 and KB5079473), we are tracking a high-severity "hard freeze" issue across a batch of 20 Dell laptops (primarily 5680 and 5690 models). The system becomes entirely unresponsive, requiring a physical power button reset the moment the integrated camera is initialized in apps like Teams, Zoom, or the native Camera app. Troubleshooting (BIOS updates to 1.27.0,driver clean installs, and disabling hardware acceleration) has a near-zero success rate.

This issue is spreading to more laptops every week. We are struggling to workaround this issue and users have to deal with no webcam or constant lock ups during calls.

Windows for business | Windows 365 Business
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  1. Scott Nguyen 2,135 Reputation points Independent Advisor
    2026-03-23T15:04:06.6033333+00:00

    Hello Daniel.

    Thank you for giving your problem to us.

    After some inspection about the latest updates, especially Build KB5079473, I see there are issues related to locks up/micro freezes during uses and the most safe and easy to solve is to rollback the previous update:

    1. Uninstall the KBs:
      As a temporary triage, uninstall the offending updates using an elevated command prompt:

    wusa /uninstall /kb:5079473 /quiet /norestart

    wusa /uninstall /kb:5077179 /quiet /norestart

    1. Rollback the Driver: Open Device Manager -> System Devices -> Right-click the Intel Visual Sensing Controller (or Intel IPU) -> Properties -> Driver -> Roll Back Driver.

    However, there is a suggestion for only Dell-models that you might try before doing the rollback. Dell systems in the 5000-series utilize "Presence Detection" and intelligent privacy features handled by Dell Optimizer and the Intel Visual Sensing Controller. The recent Windows updates might break the software hooks these services use.

    Open Dell Optimizer on an affected machine.

    Navigate to the Presence Detection module.

    Completely disable Onlooker Detection, Walk Away Lock, and Wake on Approach.

    Open services.msc and set the Dell Optimizer Service to Manual or Disabled to test if the middleware is hooking the camera and causing the crash during Teams/Zoom initialization.

    If you find my answer useful, please mark it as the "Accepted Answer" so other members can find the solution easily. Your help in supporting the community is much appreciated!

    Best regards,
    Scott Nguyen

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