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New KB4512938 Servicing stack update for Windows 8.1 - Sept. 10


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Servicing stack update for Windows 8.1, RT 8.1, and Server 2012 R2: September 10, 2019

Applies to: Windows 8.1, Windows Server 2012 R2

Summary

This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Key changes include:
  • Addressed an issue in which adding vulnerable boot level components to the Secure Boot disallow list (dbx) may cause the system not to start.
We strongly recommend you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). Installing servicing stack updates (SSU) make sure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft security fixes.

How to get this update

Method 1: Windows Update

This update is available through Windows Update. It will be downloaded and installed automatically. 

Method 2: Microsoft Update Catalog

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Method 3: Windows Server Update Services

This update is also through Windows Server Update Services (WSUS).

Prerequisites

There are no prerequisites to apply this update.

Restart information

You don't have to restart your computer after you apply this update.

Update replacement information

This update replaces the previously released update KB 4517298.

Source: https://support.microsoft.com/en-us...-installing-windows-8-1-rt-and-server-2012-r2


Direct download links for KB4512938 MSU file from Microsoft Update Catalog:

:arrow:Download KB4512938 MSU for Windows 8.1 32-bit (x86) - 4.8 MB

:arrow:Download KB4512938 MSU for Windows 8.1 64-bit (x64) - 10.5 MB
 

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