Highlights This update addresses security issues for your Windows operating system. Improvements This security update includes improvements that were a part of update KB5060829 (released June 26, 2025). 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 ...

Windows Secure Boot certificate expiration 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. To avoid disruption, we recommend reviewing the guidance and taking action to update certificates in advance. For details and ...

Windows 安全開機憑證到期 重要事項: 大部分 Windows 裝置使用的安全開機憑證設定為從 2026 年 6 月開始到期。 如果未及時更新，這可能會影響某些個人和商務裝置安全開機的能力。 為避免中斷，建議您檢閱指導方針，並採取行動事先更新憑證。 如需詳細資料和準備步驟，請參閱 Windows 安全開機憑證 ...

Highlights This update addresses security issues for your Windows operating system. Improvements This security update includes improvements that were a part of update KB5055627 (released April 25, 2025). 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 ...

How to get this update Before you install this update To install any Windows 10, version 1607 cumulative update released on or after January 14, 2025, you must first install the latest Servicing Stack Update (SSU). If your device or offline image does not have the latest SSU installed, you cannot install this update.

To learn more about Windows update terminology, see types of Windows update and 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 includes ...

Windows 11 servicing stack update (KB5062862)- 26100.4484 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 ...

For information about Windows update terminology, see types of Windows updates and the monthly quality update types. To find an overview, see the update history page for Windows Server 2025. Follow @WindowsUpdate to find out when new content is published to the Windows release health dashboard. Improvements This security update includes quality improvements. The following summary outlines key ...

Windows 11 servicing stack update (KB5064531)- 26100.5074 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 ...

The October 14, 2025 update for Windows 10, version 1607 and Windows Server 2016 includes security and cumulative reliability improvements in .NET Framework 4.8. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequisites and Restart requirement sections. Summary Security Improvements CVE-2025-55248 - .NET ...