5055557: Overview with user sentiment and feedback

Last Updated May 22, 2025

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Overview

KB5055557 is a Monthly Rollup update for Windows Server 2012 R2 and Windows 8.1 released on April 8, 2025. This update package includes security improvements and addresses several key areas including Daylight Saving Time (DST) updates, OS Security enhancements, and Kerberos Authentication modifications.

The update is part of Microsoft's ongoing commitment to maintaining system security and stability for legacy Windows operating systems that are under Extended Security Update (ESU) support. It requires the latest Servicing Stack Update (SSU) KB5055665 to be installed before it can be deployed.

General Purpose

This cumulative update provides several important security and system improvements. It includes DST updates for the Aysen region in Chile to support government time change orders in 2025. The update implements new OS security measures, including the creation of a new %systemdrive%inetpub folder for enhanced protection regardless of IIS status. Additionally, it introduces Kerberos Authentication protections to address vulnerabilities related to certificate authorities in the Windows root store but not in the NTAuth store.

General Sentiment

The overall sentiment towards this update appears positive, with Microsoft providing clear documentation about the changes and implementation requirements. The update focuses on important security improvements and system stability enhancements. While there are some specific installation requirements, such as having the latest SSU installed first, these are well documented and standard procedure for Windows Server 2012 R2 updates.

It's worth noting that this is an Extended Security Update (ESU) release, meaning it's specifically for systems still running Windows Server 2012 R2 after its end of mainstream support. Organizations should consider upgrading to a newer Windows Server version as recommended by Microsoft, as ESU support will end in October 2026.

Known Issues

  • Microsoft currently reports no known issues with this update
  • Installation requires latest SSU (KB5055665) to be installed first
  • Event ID: 45 events may be logged on domain controllers due to Kerberos Authentication changes

Disclaimer: We take measures to ensure that AI-generated content is of the highest possible quality, but we cannot guarantee its accuracy and recommend that users do their own independent research. Generated on 2025-05-22 02:15 PM

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