KB5062570: Overview with user sentiment and feedback

Overview

KB5062570 (OS Build 25398.1732) is a security update released on July 8, 2025, for Windows Server version 23H2. This update includes improvements that were part of previous updates KB5060118 (released June 10, 2025) and KB5063774 (released July 1, 2025). The update addresses several key issues across different components of the Windows Server operating system.The update is particularly important as it includes security hardening changes to the Microsoft RPC Netlogon protocol, which improves security by tightening access checks for remote procedure call requests. After installation, Active Directory domain controllers will no longer allow anonymous clients to invoke certain RPC requests through the Netlogon RPC server, which could affect organizations using Samba for file and print services.Additionally, the update includes a servicing stack update (KB5062685 - version 25398.1720) that makes quality improvements to the component that installs Windows updates, ensuring a robust and reliable servicing stack for receiving and installing future Microsoft updates.

General Purpose

The primary purpose of KB5062570 is to address security vulnerabilities and improve system stability and performance in Windows Server version 23H2. The update fixes an issue with DNS Server where a full zone transfer couldn't be completed when Extension Mechanisms for DNS is enabled. It resolves language and character support problems affecting Chinese characters with GB18030 compliance issues by implementing a modern ICU-based solution that properly supports GB18030-2022 requirements.Performance improvements include addressing an issue that prevented the complete removal of unused language packs and Feature on Demand packages, which previously led to unnecessary storage use and longer Windows Update installation times. On the security front, the update upgrades the curl tool in Windows to version 8.13.0 to help protect against potential security risks, including unauthorized access to data or service disruptions. The update also implements security hardening changes to the Microsoft RPC Netlogon protocol by tightening access checks for remote procedure call requests, which enhances overall system security but may affect certain file and print service software like Samba.

General Sentiment

The general sentiment toward KB5062570 appears neutral to positive, as it addresses several important security and performance issues without introducing major disruptions for most users. The security improvements, particularly the hardening of the RPC Netlogon protocol, are significant enhancements that help protect systems against potential vulnerabilities.However, organizations using Samba for file and print services should be aware that the security changes to the Netlogon protocol might affect their operations and should refer to the Samba release notes for guidance. This targeted impact on specific software configurations represents a reasonable trade-off for the enhanced security provided.The update also addresses performance issues related to storage usage and Windows Update installation times, which should result in a more efficient system operation. While there are known issues with the Microsoft Changjie Input Method Editor for Traditional Chinese, Microsoft has provided a workaround and is working on a permanent solution, indicating responsible management of the issue.

Known Issues

• Following installation of this update, there might be issues when using the Microsoft Changjie IME (input method editor) for Traditional Chinese Reported symptoms with the Microsoft Changjie IME include: Inability to form or select words after typing the full composition (associate phrase window) Spacebar or blank key not responding Incorrect or distorted word outputs The conversion candidate window fails to display properly A workaround is available: Windows IME supports a compatibility setting that enables the use of a previous version of an IME instead To resolve the issue, users can revert to the old version of the Microsoft Changjie IME by following the steps at "Revert to a previous version of an input method editor (IME)" Microsoft is working on releasing a permanent solution

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 2025-08-05 07:30 AM

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