KB5078775: Overview with user sentiment and feedback
Last Updated April 4, 2026
Probability of successful installation and continued operation of the machine
Overview
This is a cumulative security update for Windows Server 2012 that includes miscellaneous security improvements to the internal Windows OS functionality. The update is part of the March 2026 security updates released by Microsoft. There are no specific issues documented for this release, but users should refer to the Deployments | Security Update Guide and the March 2026 Security Updates for more information about the resolved security vulnerabilities.
General Purpose
The purpose of this update is to provide security improvements and quality enhancements for Windows Server 2012. The update includes fixes for various internal Windows OS components to address security vulnerabilities and improve the overall stability and reliability of the operating system. While no specific issues are documented for this release, users should review the security update guides and release notes to understand the full scope of changes and potential impacts.
General Sentiment
The general sentiment around this update is mixed. On one hand, it provides important security improvements to help protect Windows Server 2012 systems from known vulnerabilities. However, the fact that there are known issues with installing the update on Azure Arc-enabled devices running Windows Server 2012 raises some concerns about potential compatibility problems or disruptions. Additionally, with Windows Server 2012 reaching end of support in October 2026, some organizations may be hesitant to invest time and resources into applying this update, especially if they are planning to migrate to a newer version of Windows Server in the near future. Overall, the update seems necessary from a security standpoint, but the potential issues and the limited lifespan of Windows Server 2012 could make some IT admins cautious about deploying it widely across their environments.
Known Issues
- The installation of this Extended Security Update (ESU) might fail when trying to install it on an Azure Arc-enabled device that is running Windows Server 2012. For a successful installation, users must ensure all Subset of endpoints for ESU only are met as described in the Connected Machine agent network requirements.
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 2026-04-04 12:59 AM
