July 1, 2025—KB5063774 (OS Build 25398.1668) Out-of-band
Applies To
Windows Server, version 23H2Release Date:
7/1/2025
Version:
OS Build 25398.1668
To learn about Windows update terminology, see the pages on types of Windows updates and monthly quality update types. For an overview, see the update history page for Windows Server, version 23H2.
ImprovementsÂ
This out-of-band update includes the fixes and quality improvements included in the following update:
The following summary outlines the issue addressed by this out-of-band update. The bold text within the brackets indicates the item or area of the change.
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[Core Networking] Fixed: An issue that affects network connectivity in VLAN environments with Software Defined Networking (SDN).Â
Note:Â This issue has only been observed in an internal Microsoft environment following the installation of KB5060118. There haven't been any customer reports related to this issue. If you're not experiencing this problem, you don't need to install KB5063774.
Windows Server, version 23H2 servicing stack update (KB5058522)Â - 25398.1611
This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates. To learn more about SSUs, see Simplifying on-premises deployment of servicing stack updates.
Known issues in this update​​​​​​​
Microsoft is not currently aware of any issues with this update.
How to get this update
Before you install this update
Microsoft now combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.
Install this update
To install this update, use one of the following Windows and Microsoft release channels.
|
Available |
Next Step |
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No |
This update is not available from Windows Update. |
|
Available |
Next Step |
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No |
 This update is not available from Windows Update for Business. |
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Available |
Next Step |
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Yes 1 |
To get the standalone package for this update, go to the Microsoft Update Catalog website. |
1 This latest cumulative update includes updates for AI components. Even though the AI component updates are included in the update, the AI components are only applicable to Windows Copilot+ PCs and will not install on Windows PC or Windows Server.
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Available |
Next Step |
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No |
This update is not available through Windows Server Update Services (WSUS). |
If you want to remove the LCU
To remove the LCU after installing the combined SSU and LCU package, use the DISM/Remove-Package command line option with the LCU package name as the argument. You can find the package name by using this command: DISM /online /get-packages.
Running Windows Update Standalone Installer (wusa.exe) with the /uninstall switch on the combined package will not work because the combined package contains the SSU. You cannot remove the SSU from the system after installation.
File InformationÂ
For a list of the files provided in this update, download the file information for cumulative update 5063774.
For a list of the files provided in the servicing stack update, download the file information for the SSU (KB5058522) - version 25398.1611.Â
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