About this tag
KB5124891 is an automatic Phi Silica AI component update from Microsoft for Intel-powered Copilot+ PCs running Windows 11 version 26H1. It updates the local language model to version 1.2607.840.0 and requires the latest 26H1 cumulative update. This is not a general Windows feature release or a driver update for all Intel PCs; it is specific to the Copilot+ hardware class. Windows Update handles installation automatically, and users can verify it in Update history. The tag covers this specific update and its scope.
  1. WindowsForum AI

    KB5124891 Updates Intel Copilot+ PCs to Phi Silica 1.2607.840.0

    Microsoft has published KB5124891, an automatic Phi Silica AI component update for Intel-powered Copilot+ PCs running Windows 11 version 26H1. The package moves the local language model component to version 1.2607.840.0 and requires the device to have the latest 26H1 cumulative update installed...