Windows hello doesn't work after 10/11/17 update

Oct 11, 2017 Surface Book just updated with:

Surface - System - 8/1/2017 12:00:00 AM - 1.0.85.1 and

2017-10 Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB4041691)

immediately after updating it reboots and then Windows Hello at login says it can't turn on the camera.

Settings app now says windows hello not available on this device, but it just worked right before the update

known issue?  any fix?

 

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Last updated March 13, 2019 Views 619 Applies to:
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updated to 1703 from 1607 and Windows Hello works again, and even faster.

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Hi. Solved the problem, Downloaded SurfaceDiagnosticToolkit_DRF.exe and it updated system files including 2 camera files. Problem sorted on reboot

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