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Percent of machines with Windows Hardware Error Architecture (WHEA) error after firmware installation

Description

Percent of machines having successful installations that reported a fatal WHEA event (WheaProvider.WheaDriverErrorExternal) after firmware installation.

The measure aggregates telemetry from a 28-day sliding window into a ratio of machines that have reported a fatal WHEA event over machines successfully installing firmware

The WHEA event is only retrieved from 20H1 builds, and will soo be backported to 19H1.

Measure attributes

Attribute Value
Audience Retail and Insider
Time period 28 day sliding window
Measurement criteria Aggregation of machines
Minimum instances 170
Passing criteria <= 5%
Measure ID 23260714

Calculation

machines reporting fatal WHEA error /

machines successfully installing firmware (defined by measure 20116729)