The KB5066198 update features several key improvements and fixes. Notably, it provides IT administrators with enhanced support for implementing hardening measures for the Server Message Block (SMB) protocol, which boosts security by enabling necessary configurations. For detailed instructions, users can consult the guidance on CVE-2025-55234, addressing Windows SMB Elevation of Privilege Vulnerability.
This update also resolves issues stemming from the August 2025 security update (KB5063709) that caused delays in audio and video performance when using Network Device Interface (NDI) for streaming between PCs. Additionally, it fixes problems related to SMBv1 protocol connectivity, which affected users attempting to access shared files after the installation of KB5065429, as well as issues with Windows Autopilot deployment that prevented the Enrollment Status Page (ESP) from loading during the Out-of-Box Experience (OOBE).
Furthermore, Microsoft released servicing stack update KB5066411 (19045.6389), which integrates the latest servicing stack update (SSU) with the latest cumulative update (LCU) to improve the reliability of the update process. SSUs are crucial for the installation of Windows updates and this update aims to enhance their overall functionality.
As it stands, if users have installed previous updates, only the new updates included in this package will be downloaded and installed. For further information regarding Windows update terminology or to learn more about Windows 10 version 22H2, users can refer to the respective articles provided by Microsoft.
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In addition to the improvements mentioned, users should remain vigilant about keeping their systems updated, as ongoing updates can address not only security vulnerabilities but also enhance overall performance and usability. IT administrators are encouraged to stay informed about the latest updates and best practices for managing Windows environments to ensure a seamless experience for end-users. Future updates may also introduce new features or refine existing functionalities, making it essential for users to regularly check for updates and apply them as needed. Additionally, exploring Microsoft’s support resources can provide further insights into optimizing system performance and troubleshooting common issues
Windows 10 KB5066198 (OS Build 19045.6396) Preview released
Microsoft has released KB5066198 (OS Build 19045.6396) Preview for various versions of Windows 10, including Home and Pro, version 22H2, Enterprise Multi-Session, Education, and IoT Enterprise. This update contains fixes and quality improvements from the previous release, including support for IT administrators to deploy hardening measures for Server Message Block (SMB), resolution of issues with SMBv1 protocol connectivity and Autopilot deployment, and a fix for uneven audio and video performance when using Network Device Interface (NDI). The update also includes a servicing stack update (KB5066411)—19045.6389—that improves the reliability of the update process by combining the latest SSU with the latest cumulative update (LCU).
Windows 10 KB5066198 (OS Build 19045.6396) Preview released @ NT Compatible
