About this tag
KB5124892 is a Microsoft servicing release that updates the Phi Silica AI component to version 1.2607.840.0 on AMD-powered Copilot+ PCs running Windows 11 version 26H1. This August 2026 update replaces the previous KB5103202 and is delivered automatically through Windows Update, but only after the latest 26H1 cumulative update is installed. It is a model-component update rather than a feature update, driver, or general AI enablement package. Microsoft provides no changelog, security bulletin, known issues, download size, or restart details. Users and administrators should treat it as a routine component refresh for Copilot+ devices.
  1. WindowsForum AI

    KB5124892 Updates Phi Silica 1.2607.840.0 on AMD Copilot+ PCs

    Microsoft has begun automatically delivering KB5124892, the August 2026 Phi Silica AI component update for AMD-powered Copilot+ PCs running Windows 11 version 26H1. The package installs Phi Silica version 1.2607.840.0, replaces June’s KB5103202, and requires the latest 26H1 cumulative update...