KB5055521: Overview with user sentiment and feedback

Overview

KB5055521 is a cumulative security and quality update for Windows 10 version 1607 and Windows Server 2016 released on April 8, 2025. This update includes important security improvements and addresses vulnerabilities in the Windows operating system. The update requires the latest Servicing Stack Update (KB5055661) to be installed first before it can be deployed.

General Purpose

This update provides several key improvements and security fixes. It includes protections for a Kerberos Authentication vulnerability related to certificate authority storage, implements daylight saving time changes for the Aysen region in Chile, and adds security enhancements to the OS including changes to the inetpub folder creation behavior. The update specifically addresses security issues in Windows authentication and system components, demonstrating Microsoft's ongoing commitment to system security and regional time zone compliance.

General Sentiment

The general sentiment towards this update appears cautiously positive. While it delivers important security improvements, there are some concerns regarding the implementation of certain features, particularly around Active Directory Group Policy settings. The update requires careful attention to prerequisites, specifically the installation of the latest Servicing Stack Update (SSU), which could impact deployment planning. Enterprise users should note the potential impact on domain controller event logging.

Known Issues

• Active Directory Group Policy audit logon/logoff events in local policy might not show as enabled even when functioning correctly
• Event ID 45 events may be logged on domain controllers due to new Kerberos authentication behavior
• The update requires latest SSU (KB5055661) to be installed first or it will not be offered to devices

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 2025-05-21 09:43 AM

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