KB5062572: Overview with user sentiment and feedback

Overview

KB5062572 (OS Build 20348.3932) is a security update released on July 8, 2025, for Windows Server 2022. This update is part of Microsoft's regular monthly security patch cycle and includes improvements that were previously part of update KB5060526 (released June 10, 2025). The update addresses several key issues including DHCP server stability problems, Chinese character display issues, and storage optimization. The update also includes an important security hardening change to the Microsoft RPC Netlogon protocol, which tightens 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, particularly those related to domain controller location. This change may affect organizations using specific file and print service software, such as Samba. Additionally, this update comes with a Windows Server 2022 servicing stack update (KB5062793 - 20348.3920) that makes quality improvements to the component responsible for installing Windows updates. Microsoft notes that Secure Boot certificates used by most Windows devices are set to expire starting in June 2026, which could affect the ability of certain devices to boot securely if not updated in time.

General Purpose

KB5062572 serves multiple critical purposes for Windows Server 2022 environments. First, it resolves a significant issue with the DHCP Server service that was causing intermittent failures and affecting IP address renewal for clients, which could lead to network connectivity problems across organizations. The update also addresses compliance issues with GB18030 by fixing problems with Chinese character display and input, implementing a modern ICU-based solution that properly supports GB18030-2022 requirements. Performance improvements are another key focus of this update, specifically addressing an issue that prevented the complete removal of unused language packs and Feature on Demand packages. This resolution helps reduce unnecessary storage consumption and shortens Windows Update installation times, which is particularly valuable in server environments where system resources and downtime must be carefully managed. The update also includes a crucial security enhancement to the Microsoft RPC Netlogon protocol, implementing tighter access checks for remote procedure call requests to improve overall system security. After installation, Active Directory domain controllers will block anonymous clients from invoking certain RPC requests through the Netlogon RPC server, enhancing protection against potential security vulnerabilities.

General Sentiment

The general sentiment toward KB5062572 appears to be cautiously positive, as it addresses several important issues affecting Windows Server 2022 environments. The fixes for the DHCP Server service instability and Chinese character support are likely to be welcomed by administrators experiencing these specific issues, as they resolve potentially disruptive problems in production environments. However, there is some concern regarding the implementation of the security hardening change to the Microsoft RPC Netlogon protocol. While this change improves security by tightening access controls, it could potentially cause compatibility issues with certain file and print service software, particularly Samba. Organizations using Samba will need to review the Samba release notes and potentially make configuration adjustments to ensure continued functionality. The update has also generated some installation difficulties for certain users. As evidenced by a question in Microsoft Q&A, some administrators have encountered error 0x800f0831 when attempting to install the update through both DISM commands and Microsoft Update Catalog. This suggests there may be underlying compatibility or system state issues that could complicate deployment in some environments, requiring additional troubleshooting steps such as performing a repair installation via Windows Settings.

Known Issues

• Microsoft Changjie Input Method Editor (IME) for Traditional Chinese may experience several issues after installing this update Users may be unable to form or select words after typing the full composition in the associate phrase window Spacebar or blank key may not respond when using the Changjie IME Incorrect or distorted word outputs may occur when using the Changjie IME The conversion candidate window may fail to display properly* Some users have reported installation failures with error code 0x800f0831 when attempting to install through DISM Commands or Microsoft Update Catalog

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 2025-08-12 01:47 AM

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