Summary. This article describes the protection against the publicly disclosed Secure Boot security feature bypass that uses the BlackLotus UEFI bootkit tracked by CVE-2023-24932, how to enable the mitigations, and guidance on bootable media.A bootkit is a malicious program that is designed to load as early as possible in a devices boot sequence to control the operating system start.

If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device. For more information about security vulnerabilities, please refer to the Security Update Guide website and the April 2023 Security Updates.. Windows 11 servicing stack update - 22621.1550

REMINDER After March 21, 2023, release there are no more optional, non-security preview releases for the supported editions of Windows 10, version 20H2 and Windows 10, version 21H2. Only cumulative monthly security updates (known as the "B" or Update Tuesday release) will continue for these versions.

This security update includes improvements that were a part of update KB5025305 (released April 25, 2023). When you install this KB: This update affects the Kernel-mode Hardware-enforced Stack Protection security feature. The update adds more drivers to the database of drivers that are not compatible with it. A device uses this database when ...

This security update includes improvements that were a part of update KB5028254 (released July 26, 2023). When you install this KB: This update makes miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.

REMINDER Windows 8.1 will reach end of support on January 10, 2023, at which point technical assistance and software updates will no longer be provided. If you have devices running Windows 8.1, we recommend upgrading them to a more current, in-service, and supported Windows release. If devices do not meet the technical requirements to run a more current release of Windows, we recommend that ...

Windows 10, version 22H2 update history; July 23, 2024—KB5040525 (OS Build 19045.4717) Preview; July 9, 2024—KB5040427 (OS Builds 19044.4651 and 19045.4651)

若要阻止或添加特定网站，请在“阻止的站点”或“允许的网站”下添加其 URL。 可以在应用和游戏筛选器中取消阻止浏览器。 仅通过启用“ 仅允许使用允许的网站 ”或“ 始终允许教育网站 ”切换来限制对特定网站的访问。

If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device. For more information about security vulnerabilities, please refer to the Security Update Guide website and the January 2023 Security Updates.. Windows 11 servicing stack update - 22621.898

December 12, 2023—KB5033375 (OS Builds 22621.2861 and 22631.2861) December 4, 2023—KB5032288 (OS Builds 22621.2792 and 22631.2792) Preview; November 14, 2023—KB5032190 (OS Builds 22621.2715 and 22631.2715) October 31, 2023—KB5031455 (OS Builds 22621.2506 and 22631.2506) Preview