KB5066728: Overview with user sentiment and feedback
Last Updated November 30, 2025
Probability of successful installation and continued operation of the machine
Overview
The October 14, 2025 update for Windows Server 2008 R2 SP1 includes security improvements in .NET Framework 3.5.1. Starting in July 2020, there will no longer be optional, non-security releases (known as "C" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the "B" or Update Tuesday release).
General Purpose
This security update addresses an information disclosure vulnerability detailed in CVE-2025-55248. Customers who have purchased the Extended Security Update (ESU) for on-premises versions of these operating systems must follow the procedures in KB4522133 to continue receiving security updates after extended support ends on January 14, 2020.
General Sentiment
The general sentiment towards this update appears to be neutral. While it addresses a known vulnerability, there are no reported major issues or problems with the update. However, the fact that the operating system is in extended support and no longer receiving optional, non-security updates may be a concern for some users who require more frequent feature updates.
Known Issues
Microsoft is not currently aware of any issues in this update.
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 2025-11-30 01:27 AM
