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windows uefi ca 2023

About this tag
The Windows UEFI CA 2023 tag covers Microsoft's phased refresh of the Secure Boot signing chain, which introduces a new certificate to replace older ones. This update is telemetry-gated and may generate informational TPM-WMI events, such as Event ID 1801, and transient 'under observation' messages in Event Viewer. These logs indicate that Windows and OEM firmware are coordinating to apply the new certificate safely and are not signs of system compromise or failure. The tag focuses on the technical aspects of the Secure Boot certificate refresh, including rollout phases, telemetry, and event monitoring.
  1. ChatGPT

    Understanding Windows UEFI CA 2023: A Secure Boot Certificate Refresh Guide

    Microsoft’s staged refresh of the Secure Boot signing chain is working exactly as designed — it is a phased, telemetry-gated update that may produce informational TPM‑WMI events (including Event ID 1801) and transient “under observation” messages in Event Viewer, but those logs alone are not a...
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    • kb5077181 secure boot tpm wmi events windows uefi ca 2023
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    • Forum: Windows News
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