Windows Hello stops recognizing face after camera driver change

Scenario

Face sign-in worked previously, but after updates Windows Hello can no longer recognize the user.

Recommended Resolution Path

1. Verify the IR camera is still detected and not replaced by a generic driver.
2. Remove and re-enroll facial recognition after updating the vendor camera package.
3. Check privacy permissions and camera kill switches.
4. Review whether a docking station or external camera changed device enumeration.

Technician Notes

Confirm the business impact, document the root cause, and capture any preventative follow-up in the PSA or client knowledge base.