KB5078774: Overview with user sentiment and feedback
Last Updated April 4, 2026
Probability of successful installation and continued operation of the machine
Overview
This security update for Windows Server 2012 R2 includes miscellaneous security improvements to the internal Windows OS functionality. The update is part of the February 10, 2026 Monthly Rollup (KB5075970). There are no specific issues documented for this release, but users should be aware of the upcoming Secure Boot certificate expiration that may affect certain devices if not updated in time.
General Purpose
The purpose of this update is to provide security improvements and quality enhancements for Windows Server 2012 R2. The update includes fixes for internal Windows OS functionality, but no specific issues are documented. Users should ensure they have the latest Servicing Stack Update (SSU) installed before applying this update, as it may be required for successful installation. Additionally, organizations should review the guidance and take action to update Secure Boot certificates before the expiration starting in June 2026, to avoid potential disruption to device boot processes.
General Sentiment
The general sentiment around this update appears to be neutral, as there are no known major issues reported. However, the upcoming Secure Boot certificate expiration is a concern that organizations will need to proactively address to avoid potential disruptions. Overall, the update seems to provide incremental security improvements, but users should ensure they have the latest prerequisites installed and keep an eye on the Windows release health dashboard for any emerging issues.
Known Issues
- The installation of this Extended Security Update (ESU) might fail when trying to install it on an Azure Arc-enabled device running Windows Server 2012 R2. To ensure a successful installation, make sure 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 01:03 AM
