KB5062597: Overview with user sentiment and feedback

Overview

KB5062597 is a monthly rollup security update released on July 8, 2025, for Windows Server 2012 R2 under the Extended Security Update (ESU) program. This update is part of Microsoft's continued security support for Windows Server 2012 R2, which reached its end of standard support on October 10, 2023, but continues to receive security updates through the ESU program until October 13, 2026.The update builds upon the previous month's update (KB5061018) and includes important security hardening changes to the Microsoft RPC Netlogon protocol. This security enhancement is designed to tighten access checks for remote procedure call (RPC) requests, specifically preventing anonymous clients from invoking certain RPC requests through the Netlogon RPC server on Active Directory domain controllers.It's important to note that before installing this update, users must first install the latest Servicing Stack Update (SSU) KB5058529, as the update will not be offered to devices without the latest SSU installed. Microsoft also advises users to install any required language packs before applying this update to avoid having to reinstall it later.

General Purpose

The primary purpose of KB5062597 is to enhance security for Windows Server 2012 R2 systems that are continuing to receive support through the Extended Security Update program. The update focuses specifically on improving security by implementing a hardening change to the Microsoft RPC Netlogon protocol, which tightens access checks for a set of 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. These requests are typically related to domain controller location services. This change represents an important security enhancement that helps protect domain controllers from potential unauthorized access attempts.The update also addresses security vulnerabilities that are detailed in the July 2025 Security Updates guide. Organizations using Samba for file and print services should be aware that this update may affect their Samba implementations and should refer to the Samba release notes for compatibility information.

General Sentiment

The general sentiment toward KB5062597 appears neutral to positive, as it primarily delivers important security enhancements for Windows Server 2012 R2 systems still in operation under the Extended Security Update program. The update focuses on hardening security protocols, which is generally viewed favorably by IT administrators responsible for maintaining secure environments.However, there are some considerations that might affect the reception of this update. Organizations using Samba for file and print services might need to take additional steps to ensure compatibility, which could introduce complexity to the update process. Additionally, the requirement to install the latest Servicing Stack Update (KB5058529) before this update can be applied adds an extra step to the deployment process.The update is part of Microsoft's extended support for Windows Server 2012 R2, which requires purchasing ESUs. While the continued security support is valuable, organizations still running this older server operating system should be planning migrations to newer versions as recommended by Microsoft, since extended support will ultimately end in October 2026.

Known Issues

While Microsoft officially states they are not aware of any issues with this update, there are some implementation considerations that users should be aware of: The update may fail to install on Azure Arc-enabled devices running Windows Server 2012 R2 if the required endpoints for ESU are not properly configured Users must install the latest Servicing Stack Update (KB5058529) before this update can be installed Organizations using Samba for file and print services may experience compatibility issues and should refer to Samba release notes If language packs are installed after this update, the update will need to be reinstalled

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 2025-08-02 12:59 PM

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