Summary This out-of-band update includes fixes and improvements that are a part of the following update: October 14, 2025—KB5066836 (OS Build 14393.8519) The following is a summary of the issues that this out-of-band update addresses. The bold text within the brackets indicates the item or area of the change we are documenting. [Windows Server Update Services (WSUS)] Fixed: This update ...

Microsoft 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.

Summary This out-of-band update includes fixes and quality improvements that are part of the following update: October 14, 2025—KB5066586 (OS Build 17763.7919) The following is a summary of the issues that this out-of-band update addresses when you install this update. The bold text within the brackets indicates the item or area of the change we are documenting. [Windows Server Update ...

To learn about Windows update terminology, see the articles on types of Windows updates and monthly quality update types. For an overview, see the update history page for Windows Server 2022. Stay informed! Follow @WindowsUpdate for the latest updates from the Windows Release Health Dashboard. Improvements This out-of-band (OOB) update includes quality improvements. This update is cumulative ...

August 12, 2025—KB5063880 (OS Build 20348.4052) Important: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. This might affect the ability of certain personal and business devices to boot securely if not updated in time.

Microsoft 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.

This update applies to Windows Server 2025 Datacenter & Standard machines connected to Azure Arc. To learn more about Windows update terminology, see types of Windows updates and the monthly quality update types. For an overview, see the update history page for Windows Server 2025. Stay informed! Follow @WindowsUpdate for the latest updates from the Windows Release Health Dashboard ...

On the left side of this page, you’ll find a list of all the updates released for this version of Windows. You can also find more information about releases and any known issues. Installing the most recent update ensures that you also get any previous updates you might have missed, including any important security fixes.

The following summary outlines key issues addressed by the KB update after you install it. Also, included are available new features. The bold text within the brackets indicates the item or area of the change. This update makes miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.

To learn more about Windows update terminology, see types of Windows updates and the monthly quality update types. For an overview, see the update history page for Windows Server 2025. Stay informed! Follow @WindowsUpdate for the latest updates from the Windows Release Health Dashboard. Improvements This out-of-band (OOB) update includes quality improvements. This update is cumulative and ...